Solved

Problems sending to one specific company from exchange..

Posted on 2008-06-18
6
188 Views
Last Modified: 2013-11-30
Hey All,

I have an exchange server that is fine sending emails to most people but we have one company that have their own domain name with associate email addresses hosted on a Linux server that we have suddenly got problems emailing.  What happens is the message leaves the users inbox but then sits in the exchange queue for 2 days and then the user gets a message like this:

Your message did not reach some or all of the intended recipients.

      Subject:      RE: Paypal Cheque notification
      Sent:      16/06/2008 11:43

The following recipient(s) cannot be reached:

      Julie H on 18/06/2008 11:53
            Could not deliver the message in the time limit specified.  Please retry or contact your administrator.
            <senders_domain.co.uk #4.4.7>


Any ideas??

Thanks in advanced,

Graham.
0
Comment
Question by:grae-uk
  • 3
  • 2
6 Comments
 
LVL 19

Expert Comment

by:bevhost
ID: 21811778
It could be that your PTR records aren't setup quite right.
The PTR record should have a matching A record that points back to the same IP address and this should match the EHLO name or FQDN of the exchange server.

If you have multiple mail servers NAT behind one firewall create multiple PTR records for the same IP.

Many exchange servers announce themselves as servername.mydomain.local which cannot be found in the DNS.

To check this in your exchange go into Exchange System Manager
Expand Servers->SERVERNAME->Protocols->SMTP->Default
Right Click then Properties
Delivery TAB
Advanced Button
change the fully qualified domain name to match your DNS entries.

See section 2.1 or RFC1912.
0
 
LVL 14

Accepted Solution

by:
plug1 earned 500 total points
ID: 21812635
I would suggest that if you can send all your other mail out without a problem then the issue lies with them and not you.
0
 
LVL 19

Expert Comment

by:bevhost
ID: 21819371
All mail servers are not the same.  Just because you can send to some doesn't mean that you don't have a problem.
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 14

Expert Comment

by:plug1
ID: 21820116
SMTP is a standard, therefor if it is an email server sending over the internet using IP and SMTP all mailserversdeal with it in exactly the same way. Your incorrect.
0
 
LVL 19

Expert Comment

by:bevhost
ID: 21842363
Your assumption that ALL smtp servers are configured identically and correctly is absolute rubish.
0
 

Author Comment

by:grae-uk
ID: 22011550
Ok, turned out to be a problem with the recipients hosting server blocking my ip! All sorted now!
Thanks
Graham
0

Featured Post

Networking for the Cloud Era

Join Microsoft and Riverbed for a discussion and demonstration of enhancements to SteelConnect:
-One-click orchestration and cloud connectivity in Azure environments
-Tight integration of SD-WAN and WAN optimization capabilities
-Scalability and resiliency equal to a data center

Question has a verified solution.

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

Learn to move / copy / export exchange contacts to iPhone without using any software. Also see the issues in configuration of exchange with iPhone to migrate contacts.
Pop culture is prime bait for hackers seeking to infect user’s computers and mobile devices with malicious malware. Hackers know exactly what the latest trends are online and know how to use them to their advantage.
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…
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…

808 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