21 Feb
2011
21 Feb
'11
12:05 p.m.
Is it possible to change the reject codes from the Dovecot LMTP agent? In particular I would like to change the "550 5.1.1 <...> User doesn't exist." to a temporary failure, since we already validate email addresses on the mail front-end, and such errors are most likely due to a temporary glitch in the user database lookup.
We use Postfix on the front-end, which is very configurable in this respect. I don't see a way to override the error code from LMTP, though, but suggestions are welcome.