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diff --git a/src/applications/config/option/PhabricatorMetaMTAConfigOptions.php b/src/applications/config/option/PhabricatorMetaMTAConfigOptions.php
index ce24d48ead..7e6978dfd8 100644
--- a/src/applications/config/option/PhabricatorMetaMTAConfigOptions.php
+++ b/src/applications/config/option/PhabricatorMetaMTAConfigOptions.php
@@ -1,288 +1,309 @@
<?php
final class PhabricatorMetaMTAConfigOptions
extends PhabricatorApplicationConfigOptions {
public function getName() {
return pht('Mail');
}
public function getDescription() {
return pht('Configure Mail.');
}
public function getIcon() {
return 'fa-send';
}
public function getGroup() {
return 'core';
}
public function getOptions() {
$send_as_user_desc = $this->deformat(pht(<<<EODOC
When a user takes an action which generates an email notification (like
commenting on a Differential revision), Phabricator can either send that mail
"From" the user's email address (like "alincoln@logcabin.com") or "From" the
'%s' address.
The user experience is generally better if Phabricator uses the user's real
address as the "From" since the messages are easier to organize when they appear
in mail clients, but this will only work if the server is authorized to send
email on behalf of the "From" domain. Practically, this means:
- If you are doing an install for Example Corp and all the users will have
corporate @corp.example.com addresses and any hosts Phabricator is running
on are authorized to send email from corp.example.com, you can enable this
to make the user experience a little better.
- If you are doing an install for an open source project and your users will
be registering via Facebook and using personal email addresses, you probably
should not enable this or all of your outgoing email might vanish into SFP
blackholes.
- If your install is anything else, you're safer leaving this off, at least
initially, since the risk in turning it on is that your outgoing mail will
never arrive.
EODOC
,
'metamta.default-address'));
$one_mail_per_recipient_desc = $this->deformat(pht(<<<EODOC
When a message is sent to multiple recipients (for example, several reviewers on
a code review), Phabricator can either deliver one email to everyone (e.g., "To:
alincoln, usgrant, htaft") or separate emails to each user (e.g., "To:
alincoln", "To: usgrant", "To: htaft"). The major advantages and disadvantages
of each approach are:
- One mail to everyone:
- This violates policy controls. The body of the mail is generated without
respect for object policies.
- Recipients can see To/Cc at a glance.
- If you use mailing lists, you won't get duplicate mail if you're
a normal recipient and also Cc'd on a mailing list.
- Getting threading to work properly is harder, and probably requires
making mail less useful by turning off options.
- Sometimes people will "Reply All", which can send mail to too many
recipients. Phabricator will try not to send mail to users who already
received a similar message, but can not prevent all stray email arising
from "Reply All".
- Not supported with a private reply-to address.
- Mail messages are sent in the server default translation.
- Mail that must be delivered over secure channels will leak the recipient
list in the "To" and "Cc" headers.
- One mail to each user:
- Policy controls work correctly and are enforced per-user.
- Recipients need to look in the mail body to see To/Cc.
- If you use mailing lists, recipients may sometimes get duplicate
mail.
- Getting threading to work properly is easier, and threading settings
can be customzied by each user.
- "Reply All" will never send extra mail to other users involved in the
thread.
- Required if private reply-to addresses are configured.
- Mail messages are sent in the language of user preference.
EODOC
));
$reply_hints_description = $this->deformat(pht(<<<EODOC
You can disable the hints under "REPLY HANDLER ACTIONS" if users prefer
smaller messages. The actions themselves will still work properly.
EODOC
));
$recipient_hints_description = $this->deformat(pht(<<<EODOC
You can disable the "To:" and "Cc:" footers in mail if users prefer smaller
messages.
EODOC
));
$email_preferences_description = $this->deformat(pht(<<<EODOC
You can disable the email preference link in emails if users prefer smaller
emails.
EODOC
));
$re_prefix_description = $this->deformat(pht(<<<EODOC
Mail.app on OS X Lion won't respect threading headers unless the subject is
prefixed with "Re:". If you enable this option, Phabricator will add "Re:" to
the subject line of all mail which is expected to thread. If you've set
'metamta.one-mail-per-recipient', users can override this setting in their
preferences.
EODOC
));
$vary_subjects_description = $this->deformat(pht(<<<EODOC
If true, allow MetaMTA to change mail subjects to put text like '[Accepted]' and
'[Commented]' in them. This makes subjects more useful, but might break
threading on some clients. If you've set '%s', users can override this setting
in their preferences.
EODOC
,
'metamta.one-mail-per-recipient'));
$reply_to_description = $this->deformat(pht(<<<EODOC
If you enable `%s`, Phabricator uses "From" to authenticate users. You can
additionally enable this setting to try to authenticate with 'Reply-To'. Note
that this is completely spoofable and insecure (any user can set any 'Reply-To'
address) but depending on the nature of your install or other deliverability
conditions this might be okay. Generally, you can't do much more by spoofing
Reply-To than be annoying (you can write but not read content). But this is
still **COMPLETELY INSECURE**.
EODOC
,
'metamta.public-replies'));
$adapter_description = $this->deformat(pht(<<<EODOC
Adapter class to use to transmit mail to the MTA. The default uses
PHPMailerLite, which will invoke "sendmail". This is appropriate if sendmail
actually works on your host, but if you haven't configured mail it may not be so
great. A number of other mailers are available (e.g., SES, SendGrid, SMTP,
custom mailers). This option is deprecated in favor of 'cluster.mailers'.
EODOC
));
$public_replies_description = $this->deformat(pht(<<<EODOC
By default, Phabricator generates unique reply-to addresses and sends a separate
email to each recipient when you enable reply handling. This is more secure than
using "From" to establish user identity, but can mean users may receive multiple
emails when they are on mailing lists. Instead, you can use a single, non-unique
reply to address and authenticate users based on the "From" address by setting
this to 'true'. This trades away a little bit of security for convenience, but
it's reasonable in many installs. Object interactions are still protected using
hashes in the single public email address, so objects can not be replied to
blindly.
EODOC
));
$single_description = $this->deformat(pht(<<<EODOC
If you want to use a single mailbox for Phabricator reply mail, you can use this
and set a common prefix for reply addresses generated by Phabricator. It will
make use of the fact that a mail-address such as
`phabricator+D123+1hjk213h@example.com` will be delivered to the `phabricator`
user's mailbox. Set this to the left part of the email address and it will be
prepended to all generated reply addresses.
For example, if you want to use `phabricator@example.com`, this should be set
to `phabricator`.
EODOC
));
$address_description = $this->deformat(pht(<<<EODOC
When email is sent, what format should Phabricator use for user's email
addresses? Valid values are:
- `short`: 'gwashington <gwashington@example.com>'
- `real`: 'George Washington <gwashington@example.com>'
- `full`: 'gwashington (George Washington) <gwashington@example.com>'
The default is `full`.
EODOC
));
$mailers_description = $this->deformat(pht(<<<EODOC
Define one or more mail transmission services. For help with configuring
mailers, see **[[ %s | %s ]]** in the documentation.
+EODOC
+ ,
+ PhabricatorEnv::getDoclink('Configuring Outbound Email'),
+ pht('Configuring Outbound Email')));
+
+ $default_description = $this->deformat(pht(<<<EODOC
+Default address used as a "From" or "To" email address when an address is
+required but no meaningful address is available.
+
+If you configure inbound mail, you generally do not need to set this:
+Phabricator will automatically generate and use a suitable mailbox on the
+inbound mail domain.
+
+Otherwise, this option should be configured to point at a valid mailbox which
+discards all mail sent to it. If you point it at an invalid mailbox, mail sent
+by Phabricator and some mail sent by users will bounce. If you point it at a
+real user mailbox, that user will get a lot of mail they don't want.
+
+For further guidance, see **[[ %s | %s ]]** in the documentation.
EODOC
,
PhabricatorEnv::getDoclink('Configuring Outbound Email'),
pht('Configuring Outbound Email')));
return array(
$this->newOption('cluster.mailers', 'cluster.mailers', array())
->setHidden(true)
->setDescription($mailers_description),
$this->newOption('metamta.default-address', 'string', null)
- ->setDescription(pht('Default "From" address.')),
+ ->setLocked(true)
+ ->setSummary(pht('Default address used when generating mail.'))
+ ->setDescription($default_description),
$this->newOption(
'metamta.one-mail-per-recipient',
'bool',
true)
->setLocked(true)
->setBoolOptions(
array(
pht('Send Mail To Each Recipient'),
pht('Send Mail To All Recipients'),
))
->setSummary(
pht(
'Controls whether Phabricator sends one email with multiple '.
'recipients in the "To:" line, or multiple emails, each with a '.
'single recipient in the "To:" line.'))
->setDescription($one_mail_per_recipient_desc),
$this->newOption('metamta.can-send-as-user', 'bool', false)
->setBoolOptions(
array(
pht('Send as User Taking Action'),
pht('Send as Phabricator'),
))
->setSummary(
pht(
'Controls whether Phabricator sends email "From" users.'))
->setDescription($send_as_user_desc),
$this->newOption(
'metamta.reply-handler-domain',
'string',
null)
->setLocked(true)
->setDescription(pht('Domain used for reply email addresses.'))
->addExample('phabricator.example.com', ''),
$this->newOption('metamta.recipients.show-hints', 'bool', true)
->setBoolOptions(
array(
pht('Show Recipient Hints'),
pht('No Recipient Hints'),
))
->setSummary(pht('Show "To:" and "Cc:" footer hints in email.'))
->setDescription($recipient_hints_description),
$this->newOption('metamta.email-preferences', 'bool', true)
->setBoolOptions(
array(
pht('Show Email Preferences Link'),
pht('No Email Preferences Link'),
))
->setSummary(pht('Show email preferences link in email.'))
->setDescription($email_preferences_description),
$this->newOption('metamta.public-replies', 'bool', false)
->setBoolOptions(
array(
pht('Use Public Replies (Less Secure)'),
pht('Use Private Replies (More Secure)'),
))
->setSummary(
pht(
'Phabricator can use less-secure but mailing list friendly public '.
'reply addresses.'))
->setDescription($public_replies_description),
$this->newOption('metamta.single-reply-handler-prefix', 'string', null)
->setSummary(
pht('Allow Phabricator to use a single mailbox for all replies.'))
->setDescription($single_description),
$this->newOption('metamta.user-address-format', 'enum', 'full')
->setEnumOptions(
array(
'short' => pht('Short'),
'real' => pht('Real'),
'full' => pht('Full'),
))
->setSummary(pht('Control how Phabricator renders user names in mail.'))
->setDescription($address_description)
->addExample('gwashington <gwashington@example.com>', 'short')
->addExample('George Washington <gwashington@example.com>', 'real')
->addExample(
'gwashington (George Washington) <gwashington@example.com>',
'full'),
$this->newOption('metamta.email-body-limit', 'int', 524288)
->setDescription(
pht(
'You can set a limit for the maximum byte size of outbound mail. '.
'Mail which is larger than this limit will be truncated before '.
'being sent. This can be useful if your MTA rejects mail which '.
'exceeds some limit (this is reasonably common). Specify a value '.
'in bytes.'))
->setSummary(pht('Global cap for size of generated emails (bytes).'))
->addExample(524288, pht('Truncate at 512KB'))
->addExample(1048576, pht('Truncate at 1MB')),
);
}
}
diff --git a/src/docs/user/configuration/configuring_outbound_email.diviner b/src/docs/user/configuration/configuring_outbound_email.diviner
index 4d18ba0eb2..6f5212680e 100644
--- a/src/docs/user/configuration/configuring_outbound_email.diviner
+++ b/src/docs/user/configuration/configuring_outbound_email.diviner
@@ -1,441 +1,454 @@
@title Configuring Outbound Email
@group config
Instructions for configuring Phabricator to send email and other types of
messages, like text messages.
Overview
========
Phabricator sends outbound messages through "mailers". Most mailers send
email and most messages are email messages, but mailers may also send other
types of messages (like text messages).
Phabricator can send outbound messages through multiple different mailers,
including a local mailer or various third-party services. Options include:
| Send Mail With | Setup | Cost | Inbound | Media | Notes |
|----------------|-------|------|---------|-------|-------|
| Postmark | Easy | Cheap | Yes | Email | Recommended |
| Mailgun | Easy | Cheap | Yes | Email | Recommended |
| Amazon SES | Easy | Cheap | No | Email | |
| SendGrid | Medium | Cheap | Yes | Email | |
| Twilio | Easy | Cheap | No | SMS | Recommended |
| Amazon SNS | Easy | Cheap | No | SMS | Recommended |
| External SMTP | Medium | Varies | No | Email | Gmail, etc. |
| Local SMTP | Hard | Free | No | Email | sendmail, postfix, etc |
| Custom | Hard | Free | No | All | Write a custom mailer. |
| Drop in a Hole | Easy | Free | No | All | Drops mail in a deep, dark hole. |
See below for details on how to select and configure mail delivery for each
mailer.
For email, Postmark or Mailgun are recommended because they make it easy to
set up inbound and outbound mail and have good track records in our production
services. Other services will also generally work well, but they may be more
difficult to set up.
For SMS, Twilio or SNS are recommended. They're also your only upstream
options.
If you have some internal mail or messaging service you'd like to use you can
also write a custom mailer, but this requires digging into the code.
Phabricator sends mail in the background, so the daemons need to be running for
it to be able to deliver mail. You should receive setup warnings if they are
not. For more information on using daemons, see
@{article:Managing Daemons with phd}.
-Basics
-======
-
-Before configuring outbound mail, you should first set up
-`metamta.default-address` in Configuration. This determines where mail is sent
-"From" by default.
-
-If your domain is `example.org`, set this to something
-like `noreply@example.org`.
-
-Ideally, this should be a valid, deliverable address that doesn't bounce if
-users accidentally send mail to it.
+Outbound "From" and "To" Addresses
+==================================
+
+When Phabricator sends outbound mail, it must select some "From" address to
+send mail from, since mailers require this.
+
+When mail only has "CC" recipients, Phabricator generates a dummy "To" address,
+since some mailers require this and some users write mail rules that depend
+on whether they appear in the "To" or "CC" line.
+
+In both cases, the address should ideally correspond to a valid, deliverable
+mailbox that accepts the mail and then simply discards it. If the address is
+not valid, some outbound mail will bounce, and users will receive bounces when
+they "Reply All" even if the other recipients for the message are valid. In
+contrast, if the address is a real user address, that user will receive a lot
+of mail they probably don't want.
+
+If you plan to configure //inbound// mail later, you usually don't need to do
+anything. Phabricator will automatically create a `noreply@` mailbox which
+works the right way (accepts and discards all mail it receives) and
+automatically use it when generating addresses.
+
+If you don't plan to configure inbound mail, you may need to configure an
+address for Phabricator to use. You can do this by setting
+`metamta.default-address`.
Configuring Mailers
===================
Configure one or more mailers by listing them in the the `cluster.mailers`
configuration option. Most installs only need to configure one mailer, but you
can configure multiple mailers to provide greater availability in the event of
a service disruption.
A valid `cluster.mailers` configuration looks something like this:
```lang=json
[
{
"key": "mycompany-mailgun",
"type": "mailgun",
"options": {
"domain": "mycompany.com",
"api-key": "..."
}
},
...
]
```
The supported keys for each mailer are:
- `key`: Required string. A unique name for this mailer.
- `type`: Required string. Identifies the type of mailer. See below for
options.
- `priority`: Optional string. Advanced option which controls load balancing
and failover behavior. See below for details.
- `options`: Optional map. Additional options for the mailer type.
- `inbound`: Optional bool. Use `false` to prevent this mailer from being
used to receive inbound mail.
- `outbound`: Optional bool. Use `false` to prevent this mailer from being
used to send outbound mail.
- `media`: Optional list<string>. Some mailers support delivering multiple
types of messages (like Email and SMS). If you want to configure a mailer
to support only a subset of possible message types, list only those message
types. Normally, you do not need to configure this. See below for a list
of media types.
The `type` field can be used to select these mailer services:
- `mailgun`: Use Mailgun.
- `ses`: Use Amazon SES.
- `sendgrid`: Use SendGrid.
- `postmark`: Use Postmark.
- `twilio`: Use Twilio.
- `sns`: Use Amazon SNS.
It also supports these local mailers:
- `sendmail`: Use the local `sendmail` binary.
- `smtp`: Connect directly to an SMTP server.
- `test`: Internal mailer for testing. Does not send mail.
You can also write your own mailer by extending `PhabricatorMailAdapter`.
The `media` field supports these values:
- `email`: Configure this mailer for email.
- `sms`: Configure this mailer for SMS.
Once you've selected a mailer, find the corresponding section below for
instructions on configuring it.
Setting Complex Configuration
=============================
Mailers can not be edited from the web UI. If mailers could be edited from
the web UI, it would give an attacker who compromised an administrator account
a lot of power: they could redirect mail to a server they control and then
intercept mail for any other account, including password reset mail.
For more information about locked configuration options, see
@{article:Configuration Guide: Locked and Hidden Configuration}.
Setting `cluster.mailers` from the command line using `bin/config set` can be
tricky because of shell escaping. The easiest way to do it is to use the
`--stdin` flag. First, put your desired configuration in a file like this:
```lang=json, name=mailers.json
[
{
"key": "test-mailer",
"type": "test"
}
]
```
Then set the value like this:
```
phabricator/ $ ./bin/config set --stdin cluster.mailers < mailers.json
```
For alternatives and more information on configuration, see
@{article:Configuration User Guide: Advanced Configuration}
Mailer: Postmark
================
| Media | Email
|---------|
| Inbound | Yes
|---------|
Postmark is a third-party email delivery service. You can learn more at
<https://www.postmarkapp.com/>.
To use this mailer, set `type` to `postmark`, then configure these `options`:
- `access-token`: Required string. Your Postmark access token.
- `inbound-addresses`: Optional list<string>. Address ranges which you
will accept inbound Postmark HTTP webook requests from.
The default address list is preconfigured with Postmark's address range, so
you generally will not need to set or adjust it.
The option accepts a list of CIDR ranges, like `1.2.3.4/16` (IPv4) or
`::ffff:0:0/96` (IPv6). The default ranges are:
```lang=json
[
"50.31.156.6/32",
"50.31.156.77/32",
"18.217.206.57/32"
]
```
The default address ranges were last updated in January 2019, and were
documented at: <https://postmarkapp.com/support/article/800-ips-for-firewalls>
Mailer: Mailgun
===============
| Media | Email
|---------|
| Inbound | Yes
|---------|
Mailgun is a third-party email delivery service. You can learn more at
<https://www.mailgun.com>. Mailgun is easy to configure and works well.
To use this mailer, set `type` to `mailgun`, then configure these `options`:
- `api-key`: Required string. Your Mailgun API key.
- `domain`: Required string. Your Mailgun domain.
Mailer: Amazon SES
==================
| Media | Email
|---------|
| Inbound | No
|---------|
Amazon SES is Amazon's cloud email service. You can learn more at
<https://aws.amazon.com/ses/>.
To use this mailer, set `type` to `ses`, then configure these `options`:
- `access-key`: Required string. Your Amazon SES access key.
- `secret-key`: Required string. Your Amazon SES secret key.
- `endpoint`: Required string. Your Amazon SES endpoint.
NOTE: Amazon SES **requires you to verify your "From" address**. Configure
which "From" address to use by setting `metamta.default-address` in your
config, then follow the Amazon SES verification process to verify it. You
won't be able to send email until you do this!
Mailer: Twilio
==================
| Media | SMS
|---------|
| Inbound | No
|---------|
Twilio is a third-party notification service. You can learn more at
<https://www.twilio.com/>.
To use this mailer, set `type` to `twilio`, then configure these options:
- `account-sid`: Your Twilio Account SID.
- `auth-token`: Your Twilio Auth Token.
- `from-number`: Number to send text messages from, in E.164 format
(like `+15551237890`).
Mailer: Amazon SNS
==================
| Media | SMS
|---------|
| Inbound | No
|---------|
Amazon SNS is Amazon's cloud notification service. You can learn more at
<https://aws.amazon.com/sns/>. Note that this mailer is only able to send
SMS messages, not emails.
To use this mailer, set `type` to `sns`, then configure these options:
- `access-key`: Required string. Your Amazon SNS access key.
- `secret-key`: Required string. Your Amazon SNS secret key.
- `endpoint`: Required string. Your Amazon SNS endpoint.
- `region`: Required string. Your Amazon SNS region.
You can find the correct `region` value for your endpoint in the SNS
documentation.
Mailer: SendGrid
================
| Media | Email
|---------|
| Inbound | Yes
|---------|
SendGrid is a third-party email delivery service. You can learn more at
<https://sendgrid.com/>.
You can configure SendGrid in two ways: you can send via SMTP or via the REST
API. To use SMTP, configure Phabricator to use an `smtp` mailer.
To use the REST API mailer, set `type` to `sendgrid`, then configure
these `options`:
- `api-key`: Required string. Your SendGrid API key.
Older versions of the SendGrid API used different sets of credentials,
including an "API User". Make sure you're configuring your "API Key".
Mailer: Sendmail
================
| Media | Email
|---------|
| Inbound | Requires Configuration
|---------|
This requires a `sendmail` binary to be installed on the system. Most MTAs
(e.g., sendmail, qmail, postfix) should install one for you, but your machine
may not have one installed by default. For install instructions, consult the
documentation for your favorite MTA.
Since you'll be sending the mail yourself, you are subject to things like SPF
rules, blackholes, and MTA configuration which are beyond the scope of this
document. If you can already send outbound email from the command line or know
how to configure it, this option is straightforward. If you have no idea how to
do any of this, strongly consider using Postmark or Mailgun instead.
To use this mailer, set `type` to `sendmail`. There are no `options` to
configure.
Mailer: SMTP
============
| Media | Email
|---------|
| Inbound | Requires Configuration
|---------|
You can use this adapter to send mail via an external SMTP server, like Gmail.
To use this mailer, set `type` to `smtp`, then configure these `options`:
- `host`: Required string. The hostname of your SMTP server.
- `port`: Optional int. The port to connect to on your SMTP server.
- `user`: Optional string. Username used for authentication.
- `password`: Optional string. Password for authentication.
- `protocol`: Optional string. Set to `tls` or `ssl` if necessary. Use
`ssl` for Gmail.
Disable Mail
============
| Media | All
|---------|
| Inbound | No
|---------|
To disable mail, just don't configure any mailers. (You can safely ignore the
setup warning reminding you to set up mailers if you don't plan to configure
any.)
Testing and Debugging Outbound Email
====================================
You can use the `bin/mail` utility to test, debug, and examine outbound mail. In
particular:
phabricator/ $ ./bin/mail list-outbound # List outbound mail.
phabricator/ $ ./bin/mail show-outbound # Show details about messages.
phabricator/ $ ./bin/mail send-test # Send test messages.
Run `bin/mail help <command>` for more help on using these commands.
By default, `bin/mail send-test` sends email messages, but you can use
the `--type` flag to send different types of messages.
You can monitor daemons using the Daemon Console (`/daemon/`, or click
**Daemon Console** from the homepage).
Priorities
==========
By default, Phabricator will try each mailer in order: it will try the first
mailer first. If that fails (for example, because the service is not available
at the moment) it will try the second mailer, and so on.
If you want to load balance between multiple mailers instead of using one as
a primary, you can set `priority`. Phabricator will start with mailers in the
highest priority group and go through them randomly, then fall back to the
next group.
For example, if you have two SMTP servers and you want to balance requests
between them and then fall back to Mailgun if both fail, configure priorities
like this:
```lang=json
[
{
"key": "smtp-uswest",
"type": "smtp",
"priority": 300,
"options": "..."
},
{
"key": "smtp-useast",
"type": "smtp",
"priority": 300,
"options": "..."
},
{
"key": "mailgun-fallback",
"type": "mailgun",
"options": "..."
}
}
```
Phabricator will start with servers in the highest priority group (the group
with the **largest** `priority` number). In this example, the highest group is
`300`, which has the two SMTP servers. They'll be tried in random order first.
If both fail, Phabricator will move on to the next priority group. In this
example, there are no other priority groups.
If it still hasn't sent the mail, Phabricator will try servers which are not
in any priority group, in the configured order. In this example there is
only one such server, so it will try to send via Mailgun.
Next Steps
==========
Continue by:
- @{article:Configuring Inbound Email} so users can reply to email they
receive about revisions and tasks to interact with them; or
- learning about daemons with @{article:Managing Daemons with phd}; or
- returning to the @{article:Configuration Guide}.

File Metadata

Mime Type
text/x-diff
Expires
Thu, Aug 14, 3:11 AM (4 d, 4 h ago)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
201340
Default Alt Text
(28 KB)

Event Timeline

styx copyright 2020 sirocyl / ellie (kymkdd) / ncommander / styx contributors
Use of other names and brands is not intended to reflect a claim of, or right to, use the name or brand.
styx is an operating system using the Linux kernel and components, and "styx Linux" as a phrase does not reflect the inclusion of the Linux brand or trademark in the styx project.
Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries.
Terms and Conditions (TODO: fix this!)