Spam Emails Coming From Our Email Server

Djentrify · 11-13-2007, 09:07 AM

I am a Network Admin for a midsized engineering company using a Barracuda Firewall to prevent spam. Recently I was informed that we have been blocked by bellsouth.net for spam. When I investigated the matter, I found out there are spam emails coming from "cox.net" to "bellsouth.net" in the Barracuda log. Our domain name is not "cox.net" so how is an email from "cox.net" being sent to "bellsouth.net" through our server? We are also running a Sonic Wall for antivirus and it has picked up nothing.

johnwill · 11-13-2007, 09:17 AM

They may be spoofing your domain name. I recently had a bunch of email bounces from my domain, and clearly I was not sending the SPAM in question.

Djentrify · 11-13-2007, 09:57 AM

Quote:

Originally Posted by johnwill

They may be spoofing your domain name. I recently had a bunch of email bounces from my domain, and clearly I was not sending the SPAM in question.

But how is it going through our email server? Its coming from xxxx@cox.net and going to xxxx@bellsouth.net

johnwill · 11-13-2007, 04:54 PM

Do you actually see the traffic going through your server?

11-13-2007, 09:07 AM	#1 (permalink)
Djentrify Registered User Join Date: May 2007 Posts: 13 OS: xp	Spam Emails Coming From Our Email Server I am a Network Admin for a midsized engineering company using a Barracuda Firewall to prevent spam. Recently I was informed that we have been blocked by bellsouth.net for spam. When I investigated the matter, I found out there are spam emails coming from "cox.net" to "bellsouth.net" in the Barracuda log. Our domain name is not "cox.net" so how is an email from "cox.net" being sent to "bellsouth.net" through our server? We are also running a Sonic Wall for antivirus and it has picked up nothing.

11-13-2007, 09:17 AM	#2 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 32,581 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: Spam Emails Coming From Our Email Server They may be spoofing your domain name. I recently had a bunch of email bounces from my domain, and clearly I was not sending the SPAM in question. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

11-13-2007, 04:54 PM	#4 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 32,581 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: Spam Emails Coming From Our Email Server Do you actually see the traffic going through your server? __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience