Hello,
I would like to block a particular user who is authenticated using
SASL from sending mail. Is there a way to do this?
I found one way to do it, but it is not perfect. I can block the
the email address of that user (the one they normally use) using
smtpd_sender_login_maps. This doesn't prevent them from using another
email address, however.
smtpd_recipient_restrictions =
...
reject_sender_login_mismatch
...
smtpd_sender_login_maps = regexp:/path/sender_login_map
sender_login_map:
/^u...@example\.com$/ unmatchable_string_SLDKFJNSDFLKJSDNFSKSDLFJN
The unmatchable string is because I want the entry to exist for that
email address, but I don't want to list any string that could be
matched as a SASL username.
Is this the right approach or have I missed something entirely?
