I recently started having email issues. My customers emails are bouncing back. I ran a blacklist check using my outgoing smtp IP address to find that I have been blacklisted by SORBS and BACKSCATTER. I am running Symantec Mail Security for MS Exchange on my Exhange 2003 sever. But I guess this isnt enough.
I seems like someone is abusive our smpt address..What can I implement in order to remove us and avoid this from happening again?
Listed below is the output from BACKSCATTER
This IP IS CURRENTLY LISTED in our Database.
Please note that this listing does NOT mean you are a spammer, it means your mailsystem is either poorly configured or it is using abusive techniques.
This kind of abuse is known as BACKSCATTER (Misdirected Bounces or Misdirected Autoresponders or Sender Callouts). Click the links above to get clue how and why to stop that kind of abuse.
To track down what happened investigate your smtplogs near 08.09.2013 16:56 CEST +/-1 minute.
You will either find that your system tried to send misdirected bounces or misdirected autoresponders to claimed but in reality faked senders, or your system tried sender verify callouts against our members near that time.
So you should look for outgoing emails that have a NULL SENDER or POSTMASTER in MAIL FROM.
Reading your logs carefully it shouldn't be a big deal to figure out what caused or renewed your listing.
08.07.2010 17:21 CEST listed
10.01.2012 16:25 CET expired
18.01.2012 00:46 CET listed
28.03.2012 01:25 CEST expired
22.04.2012 06:48 CEST listed
05.08.2012 15:25 CEST expired
08.08.2012 16:36 CEST listed
22.09.2012 13:25 CEST expired
23.09.2012 22:40 CEST listed
07.02.2013 17:25 CET expired
17.02.2013 04:38 CET listed
A total of 88 Impacts were detected during this listing. Last was 08.09.2013 16:56 CEST +/- 1 minute.
Earliest date this IP can expire is 06.10.2013 16:56 CEST.