>>I am in the process of testing a Barracuda Networks spamfilter for one of
>>my clients. Their MTA is Postfix (but they wont tell you that) and their
>>support says its a bad idea to do SAV
>
>SAV against domains whose MXs answer is fine. Legit @sender.domains
>that fail SAV almost always fail with MX for sender.domain not contactable.
>
>>as well as force a FQDN in the helo command.
>
>depends on how [EMAIL PROTECTED] you wanna be, can afford to be.
>
>>Has anyone run into problems with SAV rejecting good mail because the
>>sending MTA is not the final mail server?
>
>SAV doesn't probe the sending MTA, but probes the MX for @sender.domain
>
>Len
The big problem I have with SAV is when the sender uses a b0rked up domain
(like [EMAIL PROTECTED] and Postfix can't resolve or SMTP to
weblist.example.com) or the valid email is from a sender address that does not
exist (like [EMAIL PROTECTED]). For my low volumes this is not a problem. I
usually whitelist those addresses, and you could configure Postfix not to SAV
to problem domains.
Gerry
