Solved

Exchange Mail Server - MTA poor reputation? Not on blacklists. Just set up PTR

Posted on 2011-03-09
7
3,039 Views
Last Modified: 2012-05-11
I have suddenly encountered a problem where the mail from my exchange server is being rejected due to poor reputation. The server is at exchange.healthone.com.au

The server/IP does not appear on any black lists and all seems ok.

Until 24 hours ago, I did not have Reverse DNS set up, but this has never been a problem before. I now have the Reverse DNS (PTR) record in place, but this does not seem to be helping.

Any ideas?
0
Comment
Question by:subversivetech
  • 4
  • 3
7 Comments
 
LVL 76

Expert Comment

by:Alan Hardisty
ID: 35089450
What is showing you as having a poor reputation?

I can't see anywhere that would dislike you.  You seem to be RFC compliant.

What is the FQDN on your SEND Connector showing as?  It should be exchange.healthone.com.au
0
 

Author Comment

by:subversivetech
ID: 35089553
Send connector FQDN: exchange.healthone.com.au
'
Most mail servers are just hanging up on me, others are giving an explanation:

From protocol logs:

2011-03-08T00:00:02.407Z,Internet,08CDAB38E34629CE,2,10.1.1.13:24658,203.0.178.180:25,<,554-inbound.icp-qv1-irony-in5.iinet.net.au,
2011-03-08T00:00:02.407Z,Internet,08CDAB38E34629CE,3,10.1.1.13:24658,203.0.178.180:25,<,"554 Your access to this mail system from 59.167.138.240 has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.",
2011-03-08T00:00:02.407Z,Internet,08CDAB38E34629CE,4,10.1.1.13:24658,203.0.178.180:25,>,QUIT,
2011-03-08T00:00:02.408Z,Internet,08CDAB38E34629CE,5,10.1.1.13:24658,203.0.178.180:25,-,,Remote
2011-03-08T00:00:04.504Z,Internet,08CDAB38E34629CD,1,10.1.1.13:24657,203.43.124.143:25,+,,
2011-03-08T00:00:04.574Z,Internet,08CDAB38E34629CD,2,10.1.1.13:24657,203.43.124.143:25,<,554 mail3.signet.com.au,
2011-03-08T00:00:04.575Z,Internet,08CDAB38E34629CD,3,10.1.1.13:24657,203.43.124.143:25,>,QUIT,
2011-03-08T00:00:04.575Z,Internet,08CDAB38E34629CD,4,10.1.1.13:24657,203.43.124.143:25,-,,Remote
2011-03-08T00:00:20.682Z,Internet,08CDAB38E34629D1,0,,139.163.137.11:25,*,,attempting to connect
2011-03-08T00:00:20.704Z,Internet,08CDAB38E34629D1,1,10.1.1.13:24669,139.163.137.11:25,+,,

0
 

Author Comment

by:subversivetech
ID: 35091830
Why is my server being bullied by the other kids?
0
Highfive Gives IT Their Time Back

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

 
LVL 76

Expert Comment

by:Alan Hardisty
ID: 35092740
I would contact the recipient IT people and ask them to explain why they think you have a poor reputation as I can't find anywhere (like you), that shows you have a poor reputation.

They may be using some random reputation checking service that is incorrectly listing you.
0
 
LVL 76

Accepted Solution

by:
Alan Hardisty earned 500 total points
ID: 35092794
0
 

Author Closing Comment

by:subversivetech
ID: 35100526
Looking at some of those links that there is more to having a good reputation than simply not being on a blacklist. I will be investigating some kind of monitoring to get ongoing reports on reputation.

However, I have noticed today that the mail servers that were bouncing my mail have stopped doing so. Perhaps the change I made recently (setting up Reverse DNS ptr record) is having a positive effect, or perhaps the reputation score for the server is climbing back up again.
0
 
LVL 76

Expert Comment

by:Alan Hardisty
ID: 35100578
Your Reverse DNS record (lack of) will make a huge difference and is a major factor in getting rejected.
0

Featured Post

What Should I Do With This Threat Intelligence?

Are you wondering if you actually need threat intelligence? The answer is yes. We explain the basics for creating useful threat intelligence.

Join & Write a Comment

Resolve DNS query failed errors for Exchange
This process describes the steps required to Import and Export data from and to .pst files using Exchange 2010. We can use these steps to export data from a user to a .pst file, import data back to the same or a different user, or even import data t…
In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager

706 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

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now