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bind postfix to the right network interface when sending outbound mail so that SPF checks on the receiving end will pass

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fixes #3 (again)
This commit is contained in:
Joshua Tauberer
2016-02-01 12:36:52 -05:00
parent 4db8efa0df
commit 77937df955
2 changed files with 4 additions and 0 deletions
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3
setup/mail-postfix.sh
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@@ -57,11 +57,14 @@ apt_install postfix postfix-pcre postgrey ca-certificates
# Set some basic settings...
#
# * Have postfix listen on all network interfaces.
# * Make outgoing connections on a particular interface (if multihomed) so that SPF passes on the receiving side.
# * Set our name (the Debian default seems to be "localhost" but make it our hostname).
# * Set the name of the local machine to localhost, which means xxx@localhost is delivered locally, although we don't use it.
# * Set the SMTP banner (which must have the hostname first, then anything).
tools/editconf.py /etc/postfix/main.cf \
inet_interfaces=all \
smtp_bind_address=$PRIVATE_IP \
smtp_bind_address6=$PRIVATE_IPV6 \
myhostname=$PRIMARY_HOSTNAME\
smtpd_banner="\$myhostname ESMTP Hi, I'm a Mail-in-a-Box (Ubuntu/Postfix; see https://mailinabox.email/)" \
mydestination=localhost