[SpamCop-List] Re: my domain being used in return address
jseymour at spamcop.net
Wed Feb 11 08:47:08 EST 2004
> The solution i made was configuring the mail server to reject al connections
> in the following situations.
> mail from: <>
> rcpt to: <nonexsitend at mydomain.com>
> To resond "550 No such user here"
Of course, I'm of the belief that mail servers should reject *any*
delivery attempt to a non-existant user with a 55X error.
Sadly, many (*cough* Microsoft *cough*) mail servers don't allow this
easily(*). Instead, they generate a new message and send it to the
address on the From: line.
(*) I know that Exchange 5.5 CANNOT do this. Does anybody have
experience with Exchange 2000+? Can they reject an unknown recipient
during the SMTP dialog?
I do not work for Spamcop, I did not write pflogsumm,
and I never wrote for PC Magazine.
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