Latest LQ Deal: Latest LQ Deals
Go Back > Forums > Linux Forums > Linux - Server
User Name
Linux - Server This forum is for the discussion of Linux Software used in a server related context.


  Search this Thread
Old 06-12-2008, 11:10 AM   #1
Registered: Sep 2006
Posts: 39

Rep: Reputation: 15
Foreign email being sent from server

Here is my predicament:

1. Numerous foreign emails are being sent from my server. I can provide samples.

2. If these email are originating from inside my trusted network I'm not sure how to find out how. maillog does not offer any clues that I can see.

3. I've done many online open relay scans and all say "not" an open relay.

4. I've read up on smtpauth and it sounds like something I'd like to do
but I still have questions about it. And would that patch the problem or fix it?

5. One ISP that we send a lot of emails to has already blacklisted us more than once.

Here is what I'm running:

Fedora Core 5
Sendmail 8.13
Clients using Outlook and OE

Any help would be appreciated
Old 06-12-2008, 04:24 PM   #2
LQ Guru
Registered: Jan 2001
Posts: 24,149

Rep: Reputation: 256Reputation: 256Reputation: 256
Sounds to me like a client machine that uses and has authorization to send emails through this mail server has been compromised with a virus, trojan, etc. Find the originating sender and shut them down.

And if that's the real case, this should give you every argument to whoever to get rid of Outlook and OE, as these are the most targeted clients and most vulnerable.

Last edited by trickykid; 06-12-2008 at 04:27 PM.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Allow foreign clients to connect to mysql server howto bipinkdas Linux - Server 1 05-14-2008 08:05 PM
Web email server from private email server guy_ripper Linux - Server 2 01-17-2008 06:58 AM
Migrating from Lotus Domino Email Server 6.5 to Linux email Server sailu_mvn Linux - Software 0 08-22-2006 11:04 PM
What email program can work with email header on pop3 server TruongAn Linux - Software 0 01-13-2005 11:48 AM
How do I configure postfix master to forward all email to an email server ? hello321_1999 Linux - Software 1 11-18-2004 04:43 AM > Forums > Linux Forums > Linux - Server

All times are GMT -5. The time now is 11:51 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration