On 10/25/20 2:46 PM, Wietse Venema wrote: > postfix-3.6-20201025 has a preliminary implementation to limit the > envelope senders that a local user may specify to the Postfix > sendmail (or postdrop) command. The real work is done in a library > module, so that similar functionality can later be added to the > Postfix SMTP daemon. > > Source: > http://ftp.porcupine.org/mirrors/postfix-release/index.html
I looked at the source code, and all I can say is: Wow. Thank you, Wietse! Your implementation is indeed of very high quality. Certainly better than mine! > Manual: > http://www.porcupine.org/postfix-mirror/postconf.5.html#local_login_sender_maps Nit: Given the quoted localpart TODO, it might be a good idea to suggest limiting the character set that will be matched. On a system I ran, I would use: /etc/postfix/login_senders: # Allow both the bare username and user@domain forms. /([A-Za-z][A-Za-z0-9_-]*)$/iAE $1, $1...@example.com but the regex will of course be system-dependent. I say "might" because one could reasonably argue that if a user is allowed to login with a username containing a comma or space, something has already gone wrong. > I still need to add some credits to the HISTORY file, and update > the RELEASE_NOTES file with a feature summary. > > Wietse Demi
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