Support LQ: Use code LQ3 and save $3 on Domain Registration
Go Back > Forums > Linux Forums > Linux - Security
User Name
Linux - Security This forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.


  Search this Thread
Old 12-02-2005, 08:02 AM   #1
Homer Glemkin
Registered: Nov 2004
Distribution: Ubuntu, CentOS
Posts: 50

Rep: Reputation: 15
Stopping spoofed emails

Is there a setting in Mailscanner or postfix to stop someone from sending from or to an email address the does not exits as a user. example: or These don't exist yet there spoofed and email is sent them.
Old 12-02-2005, 08:13 AM   #2
LQ Newbie
Registered: Jul 2004
Distribution: Gentoo, Debian, Suse, Ubuntu
Posts: 12

Rep: Reputation: 0
postfix from version 2.0 should return a user unknown error to the sender automatically if the recipient doesn't exist.
Maybe you have sales and info in the aliases file. If a mail ( doesn't have a local recipient, but it is still being delivered, which mailbox is it being delivered to?
Old 12-02-2005, 08:35 AM   #3
Homer Glemkin
Registered: Nov 2004
Distribution: Ubuntu, CentOS
Posts: 50

Original Poster
Rep: Reputation: 15
I see them in the alias file, I will disable them now.
Thank You very much


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
Tracing Spoofed IP Address socceroos Linux - Security 9 08-08-2005 01:45 PM
Idea on spoofed packets? SiLiCoN Linux - Security 1 05-02-2005 06:30 AM
convert html emails to plain text emails andredude Linux - General 6 03-20-2005 12:33 PM
Spoofed ips?? Attacked?? detest Linux - Security 9 06-11-2003 03:04 PM
spoofed packeting exigent Linux - Security 3 11-24-2002 03:57 PM

All times are GMT -5. The time now is 11:02 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