RE: [gentoo-server] SMTP Woes

["Olaf Niermann" <lists@cymeleons.de>]

Hi Randy,

I would give the package 'mail-filter/policyd-weight' a try to stop this
unwanted mails.

But keep in mind to have some 'check_sender_access' and
'check_recipient_access' files on hand to bypass the fail-positives
senders and recipients.

Example:
# postconf | grep 'smtpd_recipient_restrictions'
smtpd_recipient_restrictions = permit_mynetworks, check_sender_access
hash:/etc/postfix/sender_checks, check_recipient_access
hash:/etc/postfix/recipient_checks, check_policy_service
inet:127.0.0.1:12525, warn_if_reject reject_unknown_sender_domain,
warn_if_reject reject_non_fqdn_sender, warn_if_reject
reject_unknown_recipient_domain, warn_if_reject
reject_non_fqdn_recipient, warn_if_reject reject_unauth_pipelining,
warn_if_reject reject_unauth_destination, permit_auth_destination,
reject

Regards,
Olaf Niermann

-----Original Message-----
From: Randy Barlow [mailto:randy@electronsweatshop.com] 
Sent: Friday, November 30, 2007 8:00 AM
To: gentoo-server@lists.gentoo.org
Subject: [gentoo-server] SMTP Woes


I am getting a huge number of connections to my mail server (postfix)
compared to usual.  I've seen as many as 50 connections open at one
time.  The logs show that the connections are from several computers of
varying IPs, and they are all trying to send mail to random mailboxes on
my domain.  It's very annoying, and I have noticed that inbound mail
seems to be lagging by several hours.  Is there something similar to
denyhosts for spammers?  Any other suggestions?

-- 
Randy Barlow
http://electronsweatshop.com
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