Solved

Moved from Exchange 2003 to 2010, now getting SPAM through Postini

Posted on 2012-03-11
2
538 Views
Last Modified: 2012-03-11
This weekend I moved our organizations mailboxes from our old 2003 Exchange over to a 2010 Exchange server and now we are receiving a large amount of SPAM even though mail is being processed by Postini.  I have our firewall and the receive connector only accepting connections from the Postini address range.  I can't think of how SPAM would be making it in.

What else should I look into?  Is there something obvious that I missed?
0
Comment
Question by:PunkGeek
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 3

Accepted Solution

by:
Alspa earned 500 total points
ID: 37707917
do you have non-account blocking ON on postini?  BCC'd spam will get thru postini if non-accounting blocking is not enabled.  (this means all accounts need to exists in postini)

also are you sure the receive connector is properly configured?
there are 3 ways to enter ip's when you create a receive connector using the gui. (there is a little down arrow next to the plus/add sign when entering an IP)
Once i thought i was entering ip network 64.18.0.0 , subnet mask 255.255.240.0
and instead i had entered a range from 64.18.0.0 to 255.255.240.0, postini was working, but half the internet was able to send to me as well directly.  needless to say i was blaming postini, but in the mean time it was my connector.
0
 

Author Closing Comment

by:PunkGeek
ID: 37708379
Non-account blocking was not on.  This has always been set on our account and we never had issues with spam with our 2003 server.  When I turned it on we stopped receiving spam.
0

Featured Post

When ransomware hits your clients, what do you do?

MSPs: Endpoint security isn’t enough to prevent ransomware.
As the impact and severity of crypto ransomware attacks has grown, Webroot has fought back, not just by building a next-gen endpoint solution capable of preventing ransomware attacks but also by being a thought leader.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article aims to explain the working of CircularLogArchiver. This tool was designed to solve the buildup of log file in cases where systems do not support circular logging or where circular logging is not enabled
This article will help to fix the below error for MS Exchange server 2010 I. Out Of office not working II. Certificate error "name on the security certificate is invalid or does not match the name of the site" III. Make Internal URLs and External…
In this video we show how to create a Shared Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >> Sha…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question