Solved

Error 421 service not available remote server has closed connection

Posted on 2014-03-07
6
177 Views
Last Modified: 2015-05-31
Hi Exchange Expert,

This morning I had an inbound mail issue. Outbound email was fine and working normal. There was intermittent inbound mail issue. No modification on exchange server configuration.

Error returned:

Error 421 service not available remote server has closed connection. Even when I tried to telnet from outside I got an error 421 4.3.2 service not available.

It started working after I adding 0.0.0.0 - 255.255.255.255 to receive connector -receive mail from remote servers list.

It was working fine until yesterday without specifying this IP range.

Any thoughts?

Thanks,

Deorali
0
Comment
Question by:Deorali
[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
  • 2
6 Comments
 
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39912882
You must have had some kind of range in there for it to accept email.
The error you have posted is exactly what I would have expected if the range was wrong.
Furthermore it would have had that range in by default, unless it is an SBS server.

Simon.
0
 
LVL 1

Author Comment

by:Deorali
ID: 39913023
This is what I had before and the mail was flowing without having to add the new range 0.0.0.0 - 255.255.255.255
receiveconnector.JPG
0
 
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39913182
Is this an SBS Server?

Simon
0
Independent Software Vendors: 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!

 
LVL 25

Expert Comment

by:Mohammed Khawaja
ID: 39913185
There could be two possibilities:

1. Low disk space and for more see  http://support.microsoft.com/kb/284204
2. Backpressure feature and for more see http://technet.microsoft.com/en-us/library/bb201658.aspx
0
 
LVL 1

Accepted Solution

by:
Deorali earned 0 total points
ID: 39913314
@Simon: Exchange 201 SP3.  Thanks.  After comparing range of IPs  with the original configuration,  found out that one of the co-workers removed an IP range 10.1.4.56 - 192.168.170 (pretty much this was there when I took over as Exchange admin) last night from the receive connector. Therefore, by me adding IP range 0.0.0.0- 255.255.255.255 might have resolved the issue.


@mnkhwaja: Not an issue with low disk space or backpressure and I mentioned above that after adding 0.0.0.0-255.255.255.255 to the receive connector it started working.

Thanks,

Chatur Tamang
0
 
LVL 1

Author Closing Comment

by:Deorali
ID: 40804718
Please close this ticket.
0

Featured Post

Office 365 Training for IT Pros

Learn how to provision Office 365 tenants, synchronize your on-premise Active Directory, and implement Single Sign-On.

Question has a verified solution.

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

This article demonstrates probably the easiest way to configure domain-wide tier isolation within Active Directory. If you do not know tier isolation read https://technet.microsoft.com/en-us/windows-server-docs/security/securing-privileged-access/s…
Unified and professional email signatures help maintain a consistent company brand image to the outside world. This article shows how to create an email signature in Exchange Server 2010 using a transport rule and how to overcome native limitations …
To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…
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…

737 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