Re: cyrus accepts mails for "unknown users"

Zitat von Marcus Schopen <lists <at> localguru.de>:

> Hi,
>
> I've seen that simular questions have been discussed here, but I'm not sure
> if this problem is the same (sorry if yes and I just didn't get it):
>
> I'm runnung sendmail 8.12.3 with cyrusv2 local mailer (Debian woody standard
> package) and cyrus 2.1.17 (backport from http://people.debian.org/~hmh/).
> Today I had a heavy spam attack caused by the fact, that sendmail accepts
> mails for non existing users. EMails to unknown accounts on local domains
> (local-host-names) will be accepted and than bounced. Is there a way to
> stop/reject these mails at "rcpt to: user unknown"-point?

This is a sendmail question. Nothing Cyrus can do about. You have to make
sendmail aware which users are valid.

Regards

Andreas

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