On Thursday 31 May 2007 20:26, Dan_Mitton@??? wrote:
> I want to be able to reject/remove specific RCPT address based on some
> rules. I have the rules written and working, but I've tried implementing
> this in the acl_smtp_rcpt acl and it's not working as I expected. From
> within the acl, I do a DENY for addresses I wish to reject. This seems to
> generate a 550 error which kills the message.
It is correct to return a 550 code in response to invalid or otherwise
unaccepted recipients. However, some broken mailers incorrectly give up the
message completely. If you say 550 to an MUA, then what happens or should
happen isn't quite as obvious. Traditionally, mail coming from users has been
accepted and a bounce message generated if there is a problem. Some have
argued that many users won't understand what a bounce message means, and that
they are more likely to realise that sending failed if they get an error
message immediately, in a message box. But when sending to multiple
recipients at remote domains, verifying the addresses before accepting them
can take rather long time, and if only some fail I guess the user can be
really confused...
I'm not sure if this answers your question...
--
Magnus Holmgren holmgren@???
(No Cc of list mail needed, thanks)
"Exim is better at being younger, whereas sendmail is better for
Scrabble (50 point bonus for clearing your rack)" -- Dave Evans
