Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Exchange 2010 limit for incoming messages with many recipients ?

Posted on 2016-08-30
3
Medium Priority
?
67 Views
Last Modified: 2016-11-08
Out customer have their own Exchange server 2010 in their office. Incoming mail are first sent to an external server for spam filtering.
That server is a Linux machine running postfix.
After spam checks and similar is done, the email are sent to the exchange server which has a receive connector configured to accept incoming emails only from the external server.

This works fine, but there are one problem. Often when email are sent to the customer with more than one recipients, for example one TO-address and one CC-address, the exchange server refuse one of two recipients.
Later on, when the postfix server retries the refused address, it works. But the customer complains about delayed mails...

Log file from postfix:
I Aug 29 08:22:59 vmi65459 postfix/smtp[5190]: B398DD80AFB: to=<prename.surename@domain.com>, relay=none, delay=532, delays=531/0.03/0/0, dsn=4.4.1, status=deferred (connect to mail.domain.com [XXX.XXX.XXX.XXX]:25: Connection refused)

Is there a limit for number of concurrent connections for incoming mail which I can increase at the Exchange server?
0
Comment
Question by:Martin_Radbo
[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
3 Comments
 
LVL 1

Assisted Solution

by:JAGDIS S
JAGDIS S earned 2000 total points
ID: 41828853
You have to change the receive connection rate limits in exchange server side.
Try this with the help of this document
https://technet.microsoft.com/en-us/library/bb125140(v=exchg.140).aspx
0
 

Accepted Solution

by:
Martin_Radbo earned 0 total points
ID: 41841493
Thanks for your answer.
It turned out to be a limit at the hosting provider for the external spam server. They had set a limit of only 1 smtp-connection at the same time for port 25 :-(
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Know the reasons and solutions to move/import EDB to New Exchange Server. Also, find out how to recover an Exchange .edb file and to restore the file back.
One-stop solution for Exchange Administrators to address all MS Exchange Server issues, which is known by the name of Stellar Exchange Toolkit.
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…
This video discusses moving either the default database or any database to a new volume.

721 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