LinuxQuestions.org
Download your favorite Linux distribution at LQ ISO.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Security
User Name
Password
Linux - Security This forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.

Notices


Reply
  Search this Thread
Old 04-14-2007, 01:04 PM   #1
Valkyrie_of_valhalla
Member
 
Registered: Jan 2006
Location: Romania
Distribution: Suse 12.0, Slackware 12.1, Debian, Ubuntu, Gentoo
Posts: 301

Rep: Reputation: 30
sendmail server: how to check if it's secure?


I'm trying to set up a home mail server so it will be able to recieve mail from anyone out there, to be able to send only from my box, without accepting other connections.
I'm using sendmail 8.13.8 on my slackware box. I have port 25 opened, and it seems 587 is opened too.
All I modified was /etc/mail/access, adding the line "* OK", which from what I understand, should recieve mail from anyone, but not relay it.
It seems ok, it can send and recieve mail.
I asked a friend to try to telnet on those ports, and it disconnects him, so I am assuming my configuration is ok.
I'm currently installing clamav and spamassasin.

What else can I do to secure it or test it?
Does sendmail have a log somewhere? And, in Suse, I had a /var/log/firewall log with all the dropped packages. Is there or can I have something like this in Slackware?

I'm still a newbie at this, so any info/suggestion is welcomed. Thanks for reading.
 
Old 04-14-2007, 01:39 PM   #2
acid_kewpie
Moderator
 
Registered: Jun 2001
Location: UK
Distribution: Gentoo, RHEL, Fedora, Centos
Posts: 43,417

Rep: Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981
try this http://www.abuse.net/relay.html
 
Old 04-14-2007, 01:48 PM   #3
Valkyrie_of_valhalla
Member
 
Registered: Jan 2006
Location: Romania
Distribution: Suse 12.0, Slackware 12.1, Debian, Ubuntu, Gentoo
Posts: 301

Original Poster
Rep: Reputation: 30
Thank you, tried the anonymous test.

Quote:
Relay test result
All tests performed, no relays accepted.
So far so good, I guess. Anything else I should be doing?
 
  


Reply


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
How do I secure sendmail to only send email from php on localhost jmille34 Linux - Security 1 08-22-2006 08:51 PM
how can I secure my nis server ?can I use openSSL to secure it form sniffing ? abhi_raj Linux - Networking 1 07-10-2006 07:19 AM
Sendmail secure authentication saf Slackware 5 06-05-2006 11:13 AM
Health Check / Server Completion Check Software? tells Linux - Enterprise 0 04-20-2006 12:03 PM
Ok not linux but AIX and secure sendmail setup cyph3r7 Linux - Security 4 08-06-2003 09:12 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Security

All times are GMT -5. The time now is 04:06 PM.

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