csciarro
asked on
Why are some emails being held in th Exchange System Manager Queues?
I recently changed our ISP from Verizon DSL to a Towerstream T1 and now I have some emails/domains being held in the Exchange System Manager Queue. I updated the IP that is hosting our domains so that isn't the cauise and did Reverse DNS entries on Towerstreams end for our domain. The only thing that has changed is that I removed the smart host address on the Exchange server since Towerstream serves doesn't require one.
Any ideas of why these aren't getting delivered???
Thanks
Any ideas of why these aren't getting delivered???
Thanks
What are some of the messages in the queue?
Did you change the DNS forwarder from Verizon to Towerstream?
Did you change the DNS forwarder from Verizon to Towerstream?
ASKER
When I type telnet mail.laborlawupdates.com I get the following error message from the command prompt.....
"Could not open connection to host, on port 23: Connect failed:"
"Could not open connection to host, on port 23: Connect failed:"
Sorry, it should telnet mail.laborlawupdates.com 25
ASKER
Yes, I updated the Towerstream IP address with the company that is hosting our domain. I also did the Reverse DNS changes on Towerstreams end. How do I change the DNS forwarder from Verizon to Towerstream?
Thanks
Thanks
In administrative tools open dns and right click on server name and select properties and then click on the forwarders tab. You can remove the forwarders and use Roots Hints, or use the DNS IP addresses of your new ISP.
I would recommend calling Towerstreams and asking them for the preferred DNS servers if you don't have it already and then put these in the forwarders. This is to ensure you don't have any DNS issues.
ASKER
Jbond,
I get the same error when I port 25 after the telnet command. Also, under the Forwarders Tab I have the following entry under DNS Domain: "All other DNS Domains" so do I keep this entry or do I add something else?
I get the same error when I port 25 after the telnet command. Also, under the Forwarders Tab I have the following entry under DNS Domain: "All other DNS Domains" so do I keep this entry or do I add something else?
ASKER
Ok. I have the Preferred and Secondary so should I add those?
If you are using Active Directory Intergrated Zone then you won't have a problem. In my previous comment, you can root hint or forwarders to the new ISP which I stated.
Yes add these to the DNS forwarders
Add the perferred DNS Ips that your ISP gives you to the forwarders.
Yes, add these. Optional, you don't have to use forwarders. It's depending on how you view your DNS infrastructure. You can use Root Hints which will do the same job as forwarders and your not relying on your ISP to provide DNS resolution.
ASKER
Ok...Do I have to retart the Exchange Information Store after I add this IP Forward entry?
No you are good...it should start working right away...
You will be good to go now. You might want to clear the DNS cache.
The cache will have old entrie from your previous ISP. Go to the command prompt and type ipconfig /flushdns and then press enter, then type ipconfig /registerdns press enter.
ASKER
How do I clear the DNS cache?
Go to administrative tools open DNS, right click on the server name and click on Clear DNS Cache.
ASKER
Ok. I added the IP Forwarders and cleared the cache so I will wait a litlle and see if that email clears itself from the Queue
Good Stuff!
ASKER
Ok..that domain is still retrying in the Queue..
Could there be an issue with that domain? I don't have any other domains being held for delivery.
Could there be an issue with that domain? I don't have any other domains being held for delivery.
That's why I was suggesting you try telnet on port 25 in my previous comment.
ASKER
I tried the telnet and received the same error message for that domain name.
ASKER
Any other suggestion on why I have to domains held in the Que?
Thanks
Thanks
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ASKER
Ok. I applied the SMTP relay address and still having issues with receiving emails from some domains. Any other suggestions would be appreciated.
Thanks
Thanks
ASKER
A smart host address needs to be applied to the Exchange server
Telnet mail.recipient's domain.com
helo mail.recipient's domain.com
mail from: <your email address>
rcpt to: <recipient's email address>
data
Subject: test email
. this is a period press enter and this will display if the message is successful or not. If it is not successful you will receive an error message which will help you dianose the problem.