Solved

SBS2008 Exchange 2007 won't receive email

Posted on 2016-09-15
12
51 Views
Last Modified: 2016-09-16
All was OK until yesterday lunch when incoming email stopped. A server reboot fixed it for a while but within about 6 hours it stopped again and hasn't worked since. Email will send and internal email flows OK but external incoming email doesn't arrive. Services are running and I can ping the exchange server by name. Port 25 is open and points to the server.
0
Comment
Question by:ClintonK
[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
  • 4
  • 4
  • 4
12 Comments
 
LVL 49

Expert Comment

by:Akhater
ID: 41800096
Please go to https://www.testconnectivity.microsoft.com/ and run the "Inbound SMTP Email" test see what it gives you
0
 
LVL 31

Accepted Solution

by:
Scott C earned 500 total points
ID: 41800422
Check drive space.  It doesn't sound like a configuration issue, it sounds like backpressure.  Basically, if there isn't enough drive space Exchange will refuse external emails in order to protect the drive from filling up and crashing the server.

http://exchangeserverpro.com/exchange-transport-server-back-pressure/

https://technet.microsoft.com/en-us/library/bb201658(v=exchg.160).aspx

The connectivity analyzer won't help in this case.
0
 

Author Comment

by:ClintonK
ID: 41800470
All seems to have burst back into life now and emails are arriving. They started to come in about 3 hours ago - I haven't made any changes since posting this question so it seems to have sorted itself out somehow.
The server has 400Gb HDD and 18Gb free. Not a huge amount free but enough not to stop Exchange I would have thought?
0
Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

 
LVL 49

Expert Comment

by:Akhater
ID: 41800477
Everything above 4gb should be ok by default but it also could be the ram

Read this it will help you track if it is indeed back pressure
  http://m.msexchange.org/articles-tutorials/exchange-server-2007/management-administration/understanding-back-pressure-feature-exchange-server-2007.html
0
 
LVL 49

Expert Comment

by:Akhater
ID: 41800483
@ScottCha off course the connectivity analyser would help, it would show "not enough system resources"
0
 
LVL 31

Expert Comment

by:Scott C
ID: 41800487
Ok.  I stand corrected. Thank you.

I had a server the other day get backpressures with just 12 GB free.
0
 

Author Comment

by:ClintonK
ID: 41800493
I've just run the connectivity tester and all is good (green ticks), but I suppose it would be now the emails are flowing. I do recall looking at the free disc space earlier and there was 10Gb free so where the additional 8Gb came from I don't know. It does sound likely that it's the back pressure thing.
0
 
LVL 49

Expert Comment

by:Akhater
ID: 41800496
yes my guess is that Scott is right about BackPressure, please check the event log you can easily know that.

@Scott the correct backpressure formula is

Free space percentage = (disk size – 500MB) / disk size

so for a 400 GB disk that would be 98% so backpressure will kick in when free space is less than 8GB
0
 
LVL 31

Expert Comment

by:Scott C
ID: 41800556
Also, you are going to want to start looking into migrating off of Exchange 2007.  Support for Ex2k7 is rapidly coming to an end.

You can't even do a one-step migration from 2007 to 2016.  You'd have to do a two step sing 2010 or 2013 in the middle.
0
 

Author Comment

by:ClintonK
ID: 41800563
Not sure what the plan is for the future. We may move Exchange offsite or look into the possibility of an onsite Linux solution like Zentyal
0
 

Author Closing Comment

by:ClintonK
ID: 41802115
Freeing up space appears to have cured the problem. Mail has been flowing OK today now there is 20Gb free. I will work to make more space available to avoid a repeat of the problem.
Thanks chaps.
0
 
LVL 31

Expert Comment

by:Scott C
ID: 41802248
Glad I could help.
0

Featured Post

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

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

A list of top three free exchange EDB viewers that helps the user to extract a mailbox from an unmounted .edb file and get a clear preview of all emails & other items with just a single click on mailboxes.
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…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
Suggested Courses

617 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