From: mouss (no email)
Date: Tue Jul 01 2008 - 04:41:10 EDT
Nicolas Letellier wrote:
> [snip]
> Yes, I have the 'smtpd' line, of course. I juste pasted the two lines where I have a question. Is it normal tha the mail to relay pass by my service (from master.cf), and after, is sent by smtp.domain.com.
> I thinked than the mail to relay will just pass directly by the relay, not by the service.
>
What do you mean by "service" vs "relay"? mail is queued by the relay
server and then sent to the final destination (provided the relay server
is not configured to deliver such mail locally).
> Another question:
> I see that bounce mail could be problematic. Is it a good idea (and mainly, is it possible?) to disable bounce mail *only* for mail to relay?
>
>
you should make sure that you validate recipients during the smtp
transaction. so either have the list of relay recipients
(relay_recipient_maps) or use reject_unverified_recipient (but the
latter breaks the purpose of "backup" in backupMX :).
> One another:
> Is it adviced to reject mail with a sender address not resolvable?
>
you can but it does not catch a a lot of junk. use zen.spamhaus.org and
after that see what spam is missed. you can then tune your restrictions
if possible (otherwise, use a content filter).
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