I will also have about 5 to 25 smtp connection at any given time
Main Topics
Browse All TopicsI have a window 2003 standard server run exchange 2003. I believe I have virus or malware on this server because we are getting a TON of port 25 connections. I do not believe I have an open relay because I've gone through the open relay solutions on this site. Here's the out put from hijackthis
This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.
Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.
If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.
Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.
Access the answers to your technology questions today.
30-day free trial. Register in 60 seconds.
Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Try it out and discover for yourself.
30-day free trial. Register in 60 seconds.
Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.
Spammers are constantly connecting to servers and probing them. They don't always close the connection correctly.
Do you have recipient filtering enabled?
If not then I would enable it. http://www.amset.info/exch
Enable tarpit as well.
I very much doubt if you have anything on the server, this is just standard spammer's behaviour.
Simon.
It isn't really clear what you are seeing.
A trojan or similar on the server is NOT going to scan itself.
If something got on to a workstation, it is not going to scan your server.
Trojans want to keep out of sight. They send email directly, not through another host.
If your server was compromised then you would know, as the queues would be fully of junk.
These things don't get on to the server on their own, so unless someone has been stupid and browsed from the server, then it is unlikely there is something on there.
Nothing you have posted so far make me believe this is anything other than the standard attacks that any SMTP server gets when exposed to the Internet and that Exchange can fend off.
Simon.
Well, sorry not getting back...
I understand about the SMTP connection thing.
As for the Funky Junk. I do have a ton postmaster reply stuff from all the bogus emails which we really have not had in a long time. Like say a year. also on the router I'm seeing a lot of port 53 request to a non DNS server. That is you I've added the Highjackthis log. Something is bogging down the network. Here is a some of the port 53 request.
snip...
udp : BLAH 2948 192.168.1.2:2948 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2952 192.168.1.2:2952 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2955 192.168.1.2:2955 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2959 192.168.1.2:2959 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2964 192.168.1.2:2964 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2969 192.168.1.2:2969 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2973 192.168.1.2:2973 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2976 192.168.1.2:2976 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2980 192.168.1.2:2980 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2985 192.168.1.2:2985 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2990 192.168.1.2:2990 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2994 192.168.1.2:2994 205.171.14.195:53 205.171.14.195:53
udp : BLAH 2997 192.168.1.2:2997 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3001 192.168.1.2:3001 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3006 192.168.1.2:3006 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3011 192.168.1.2:3011 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3015 192.168.1.2:3015 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3018 192.168.1.2:3018 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3022 192.168.1.2:3022 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3026 192.168.1.2:3026 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3029 192.168.1.2:3029 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3048 192.168.1.2:3048 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3061 192.168.1.2:3061 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3071 192.168.1.2:3071 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3075 192.168.1.2:3075 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3078 192.168.1.2:3078 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3082 192.168.1.2:3082 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3087 192.168.1.2:3087 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3092 192.168.1.2:3092 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3096 192.168.1.2:3096 205.171.14.195:53 205.171.14.195:53
udp : BLAH 3099 192.168.1.2:3099 205.171.14.195:53 205.171.14.195:53
snip...
not sure if this question need to be move to a different Zone for a better chance at solution.
I have no idea if these are related issues, but I've open a new question to help resolve my inability to access experts-exchanges website on any work workstations. here is the new question.
http://www.experts-exchang
This makes it hard to solve this question as I can no longer access my #1 resource for solutions.
HELP!!
;-0
Business Accounts
Answer for Membership
by: MikeHolcombPosted on 2009-10-16 at 12:24:19ID: 25592489
Would it be possible to provide a sample of the SMTP connections you are seeing? This would help give us a better idea of what truly is going on.
One thing to consider, especially if you haven't looked at your SMTP connections previously, is that a lot of hosts on the Internet are scanning for SMTP servers and automatically attempting to send spam which might make your stats appear high when it reality this is what we have to deal with when a mail server is connected directly to the Internet unfortunately.
Hope this helps...
Mike