SBS 2008 - can't get POP email

Running SBS 2008 - POP3 is set to download mail from an offsite mail server then distribute it to network users. the mail is coming into the offsite server but SBS won't donwload it. Whenever I do the 'Retrieve Now', I get this error:

Cannot connect to the SMTP server 'localhost' on port 25. The error code was 0x800ccc0e. Verify that the Microsoft Exchange Transport service is running and that the Exchange receive connectors are properly configured.

I don't know why I'm getting an SMTP error since we're downloading with POP3. We've been using this POP3 setup forever - before we upgraded to SBS 2008 7 months ago. It was working fine one day and then just stopped working. Nothing was changed configuration wise at all. There was a recent update about a week ago.

I removed mailbox quotas but I don't think that's the problem.
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Hendrik WieseInformation Security ManagerCommented:
When you say: "mail is coming into the offsite server but SBS won't donwload it"
1. Is the SBS the offsite server?

With regards to: "Cannot connect to the SMTP server 'localhost' on port 25" and "Exchange receive connectors are properly configured"
1. What happens when you try to telnet from SBS to Exchange and verse visa the server on port 25 and 110, does it connect?

With regards to: "Verify that the Microsoft Exchange Transport service is running"
1. I presume that you have checked the transport server on your server and it is in fact running?

And then finally, have you got the latest updates on all server, as you mentioned that it broke after a recent update. Just ensure that you have the latest updates installed on all servers. Including rollups etc.



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amarkhalsaAuthor Commented:

Thanks for your reply.

The SBS is not the offsite server. The offsite server hosts one of our small websites and email accounts are included. When we set up the server, we chose to have it download email from the remote server. We're a tiny company of 9 (6 full-time) so I act as a very part-time network admin and my knowledge is very limited.

We get emails from 2 sources - in-house network users and offsite 3rd party provider.We are able to send intra-company email between network users. ahowever, email from our offsite provider doesn't download.  It seems like the Exchange settings are an either/or situation but since it was working before, it must not be.  I'm not sure what all of the setting should be.

I don't know how to Telnet between Exchange and SBS. In SBS, Exchange is integrated.

I checked the services and all Exchange services are running including the transport service.

There was a service pack update sometime last week that required a server reboot.
The only update that hasn't been installed is IE9 for Windows Server 2008 64 bit. I'm downloading that now.

Hendrik WieseInformation Security ManagerCommented:
Ok so lets start with the telnet portion as this will narrow things down for us:

To install the telnet client, open an administrator command prompt and enter servermanagercmd –install telnet-client. You can then follow as a guide for testing POP3 with telnet.
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Hendrik WieseInformation Security ManagerCommented:
Sorry the reference site is: SBS 2008: Introducing the POP3 Connector
amarkhalsaAuthor Commented:
I can access the mail thru telnet using the IP of our mail host but not the doamin name. I think that it may have something to do with the fact that the person who set up SBS named the local domain the same as our website domain: SBS domain =, IPS domain I don't want to try and change the domain name of the SBS unless I really have to. Am thinking that Exchange should be pointed to an IP address instead of a domain name but not sure which setting to change.

Hendrik WieseInformation Security ManagerCommented:
Ask you service provider to create an external dns for and nat it to your server.
amarkhalsaAuthor Commented:
I've narrowed it down to port 25 being blocked - I can't telnet to our email server on that port. I've checked with our email host, our ISP and all insist that port 25 is open. My firewall is set to allow port 25 traffice but it all suddenlty stopped a weeke ago. I'm now going to check anti-virus settings but am doubtful.
amarkhalsaAuthor Commented:
I found a possible setting in the McAfee antiviru that may have been blocking port 25. Telnet still says it's blocked but we're getting email now.
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