Re: [SLE] Rejecting backscatter mail in postfix
-----Original Message----- From: Patrick Shanahan [mailto:paka@wahoo.no-ip.org] Sent: Thursday, December 2, 2004 02:37 PM To: 'SLE' Subject: Re: [SLE] Rejecting backscatter mail in postfix
* Togan Muftuoglu
[12-02-04 03:37]: Third alternative is not to use backup MX at all, since clever MTA should have a resending que for the mail somewhere between 4 to 5 days. So mail should not be getting lost. Since the spammers almots always use the backup MX to deliver their junk no backup MX also means less junk
This is my present condition, but I still get undeliverable mail notices from suse ezmlm when I have had my system off the air for 30 minutes or longer for some kind of maintenance. note: the 30 minute time figure is a guesstimation rather than an accurate observation.
But there is no handy way to see if your system has *lost* mail due to downtime that I know of.
We run a Barracuda Networks Anti Spam/Virus Firewall for our e-mail service and that really helps. E-mail stays queued for all MTA's that are offline. Very sweet and effective. Dee
Thu, 02 Dec 2004, by deem@wdm.com:
We run a Barracuda Networks Anti Spam/Virus Firewall for our e-mail service and that really helps. E-mail stays queued for all MTA's that are offline. Very sweet and effective.
There was a longish discussion about that barracude thing on news.admin.net-abuse.blocklisting in the past weeks. It seems that networks that employ this apparatus are being included in spamcop.net blocklists too, because the barracude is by default configured to bounce spam and virussen instead of rejecting them, and to make matters worse, to also include a commercial message about the product with every bounce. Theo -- Theo v. Werkhoven Registered Linux user# 99872 http://counter.li.org ICBM 52 13 27N , 4 29 45E. + ICQ: 277217131 SUSE 9.2 + Jabber: gurp@nedlinux.nl Kernel 2.6.8 + MSN: twe-msn@ferrets4me.xs4all.nl See headers for PGP/GPG info. +
participants (2)
-
Theo v. Werkhoven
-
W.D.McKinney