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Code Issues Releases Activity

config/ENV: improve Postfix config for spoof protection (#3127)

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This commit is contained in:
Georg Lauterbach
2023-03-03 15:55:32 +01:00
committed by GitHub
parent aa4d4fe315
commit 5ec6845c96
6 changed files with 17 additions and 15 deletions
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7
mailserver.env
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@ -86,11 +86,8 @@ TLS_LEVEL=
# Configures the handling of creating mails with forged sender addresses.
#
# empty => (not recommended, but default for backwards compatibility reasons)
# Mail address spoofing allowed. Any logged in user may create email messages with a forged sender address.
# See also https://en.wikipedia.org/wiki/Email_spoofing
# 1 => (recommended) Mail spoofing denied. Each user may only send with his own or his alias addresses.
# Addresses with extension delimiters(http://www.postfix.org/postconf.5.html#recipient_delimiter) are not able to send messages.
# **0** => (not recommended) Mail address spoofing allowed. Any logged in user may create email messages with a forged sender address (see also https://en.wikipedia.org/wiki/Email_spoofing).
# 1 => Mail spoofing denied. Each user may only send with his own or his alias addresses. Addresses with extension delimiters(http://www.postfix.org/postconf.5.html#recipient_delimiter) are not able to send messages.
SPOOF_PROTECTION=
# Enables the Sender Rewriting Scheme. SRS is needed if your mail server acts as forwarder. See [postsrsd](https://github.com/roehling/postsrsd/blob/master/README.md#sender-rewriting-scheme-crash-course) for further explanation.