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Add warning to mailer documentation about authentication (#11563)
* Add warning to mailer documentation about authentication References #7966 Signed-off-by: Andrew Thornton <art27@cantab.net> * As per @guillep2k and @mrsdizzie * as per @mrsdizzie Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>
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@ -627,7 +627,8 @@ SUBJECT_PREFIX =
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; Mail server
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; Gmail: smtp.gmail.com:587
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; QQ: smtp.qq.com:465
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; Note, if the port ends with "465", SMTPS will be used. Using STARTTLS on port 587 is recommended per RFC 6409. If the server supports STARTTLS it will always be used.
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; Using STARTTLS on port 587 is recommended per RFC 6409.
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; Note, if the port ends with "465", SMTPS will be used.
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HOST =
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; Disable HELO operation when hostnames are different.
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DISABLE_HELO =
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@ -639,11 +640,13 @@ SKIP_VERIFY =
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USE_CERTIFICATE = false
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CERT_FILE = custom/mailer/cert.pem
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KEY_FILE = custom/mailer/key.pem
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; Should SMTP connection use TLS
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; Should SMTP connect with TLS, (if port ends with 465 TLS will always be used.)
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; If this is false but STARTTLS is supported the connection will be upgraded to TLS opportunistically.
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IS_TLS_ENABLED = false
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; Mail from address, RFC 5322. This can be just an email address, or the `"Name" <email@example.com>` format
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FROM =
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; Mailer user name and password
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; Please Note: Authentication is only supported when the SMTP server communication is encrypted with TLS (this can be via STARTTLS) or `HOST=localhost`.
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USER =
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; Use PASSWD = `your password` for quoting if you use special characters in the password.
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PASSWD =
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@ -397,10 +397,15 @@ set name for unique queues. Individual queues will default to
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- `DISABLE_HELO`: **\<empty\>**: Disable HELO operation.
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- `HELO_HOSTNAME`: **\<empty\>**: Custom hostname for HELO operation.
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- `HOST`: **\<empty\>**: SMTP mail host address and port (example: smtp.gitea.io:587).
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- Using opportunistic TLS via STARTTLS on port 587 is recommended per RFC 6409.
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- `IS_TLS_ENABLED` : **false** : Forcibly use TLS to connect even if not on a default SMTPS port.
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- Note, if the port ends with `465` SMTPS/SMTP over TLS will be used despite this setting.
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- Otherwise if `IS_TLS_ENABLED=false` and the server supports `STARTTLS` this will be used. Thus if `STARTTLS` is preferred you should set `IS_TLS_ENABLED=false`.
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- `FROM`: **\<empty\>**: Mail from address, RFC 5322. This can be just an email address, or
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the "Name" \<email@example.com\> format.
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- `USER`: **\<empty\>**: Username of mailing user (usually the sender's e-mail address).
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- `PASSWD`: **\<empty\>**: Password of mailing user. Use \`your password\` for quoting if you use special characters in the password.
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- Please note: authentication is only supported when the SMTP server communication is encrypted with TLS (this can be via `STARTTLS`) or `HOST=localhost`. See [Email Setup]({{< relref "doc/usage/email-setup.en-us.md" >}}) for more information.
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- `SKIP_VERIFY`: **\<empty\>**: Do not verify the self-signed certificates.
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- **Note:** Gitea only supports SMTP with STARTTLS.
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- `SUBJECT_PREFIX`: **\<empty\>**: Prefix to be placed before e-mail subject lines.
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@ -415,7 +420,6 @@ set name for unique queues. Individual queues will default to
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- `SENDMAIL_PATH`: **sendmail**: The location of sendmail on the operating system (can be
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command or full path).
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- `SENDMAIL_TIMEOUT`: **5m**: default timeout for sending email through sendmail
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- ``IS_TLS_ENABLED`` : **false** : Decide if SMTP connections should use TLS.
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## Cache (`cache`)
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@ -46,6 +46,12 @@ PASSWD = `password`
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For the full list of options check the [Config Cheat Sheet]({{< relref "doc/advanced/config-cheat-sheet.en-us.md" >}})
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- Please note: authentication is only supported when the SMTP server communication is encrypted with TLS or `HOST=localhost`. TLS encryption can be through:
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- Via the server supporting TLS through STARTTLS - usually provided on port 587. (Also known as Opportunistic TLS.)
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- SMTPS connection (SMTP over transport layer security) via the default port 465.
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- Forced SMTPS connection with `IS_TLS_ENABLED=true`. (These are both known as Implicit TLS.)
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- This is due to protections imposed by the Go internal libraries against STRIPTLS attacks.
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### Gmail
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The following configuration should work with GMail's SMTP server:
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