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- Maybe in reply to: Sipos Gabor: "Relaying with postfix"
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From: Matt Fretwell (no email)
Date: Tue Mar 01 2005 - 10:23:09 EST
Sipos Gabor wrote:
> WV> No this is inadequate. You are accepting mail for non-existent
> WV> recipients and then sending bounces to innocent people whose
> WV> address was used by some spammer or worm.
>
> And exactly what am I supposed to do with undeliverable mail...?
> Anyway, my antivirus agent does NOT send warnings neither to the
> recipient, nor the sender of the message containing virus, so
> other undeliverable messages _should_ be bounced IMHO.
>
> Still, I could set relay_domains to my.domain instead of *.my.domain,
> which is what I will probably do.
relay_transport = relay:[ip.address.of.server]
relay_domains = your.domain
relay_recipient_maps = hash:(A valid recipients mapfile)
Also check the parent_domain_matches_subdomains parameter.
Do not accept mail for non existent recipients. You will then not have to
bounce the mail. If you accept it, you keep it.
If you accept and bounce for non existent users, you will end up being
blocked by some MTA's as a backscatter host. It is a simple choice you
have. Generate a valid list of recipients on the relay, or be blocked.
Matt
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