cyrus accepts mails for "unknown users"

[Andrzej Adam Filip]

Marcus Schopen wrote:
> 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?

Take a look at http://anfi.homeunix.net/sendmail/rtcyrus2.html
<quote>
how to make sendmail check in real time presence of cyrus mailbox using socket 
map map (or fstat map) and FEATURE(`mrs'). It supports cyrus virtual domains
</quote>

-- 
Andrzej [en:Andrew] Adam Filip anfi at priv.onet.pl anfi at xl.wp.pl
Home Page http://anfi.homeunix.net/ [ PageRank 6 ]
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