POP3 mail issue- Can send but not receive emails

I have a SBS 2003 server (SP2) that is having problems receiving email. This has been working for months and yesterday it stopped receiving emails from its pop3 server which is mail.groundlevelservices.co.uk.

They can however send emails. On the server I cannot telnet mail.groundlevelservices.co.uk on port 110 but I can telnet other pop3 servers like mail.eclipse.co.uk so its not a port issue.

I have added another POP3 email account from a different pop3 server which can send and receive emails so I know that exchange itself is OK.

I think this maybe a dns issue but I am not sure how to diagnose. The server is called GL server and is a domain called groundlevelservices.local.

I have set the pop3 manager to create a maximum detail log. I am getting errors 1036 and 1023.

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PCWalshAuthor Commented:
Also I cannot ping mail.groundlevelservices.co.uk from the server. I can ping this address from pc's on a different network.
Can you do a tracert on both networks to the host and see where they differ.
Can you try to connect to the pop server with a normal mail client using pop3
PCWalshAuthor Commented:
two tracert files attached. servertracert.txt is from the sbs server that cannot see mail.groundlevelservices.co.uk- tracert.txt is from a pc that can see mail.groundlevelservices.co.uk
also ipconfig is from server

Tried setting up outlook express to get mail from mail.groundlevelservices.co.uk but it could not connect.

I can send and receive emails from the server using a different pop3 mail server- mail.eclipse.co.uk
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Dave StringfellowIT managerCommented:
mail.groundlevelservices.co.uk is not running a pop3 service on it, try telnet "mail.groundlevelservices.co.uk 110" in a DOS window, and it will not connect.

You need to talk to who ever provides the serive for your mail server.
PCWalshAuthor Commented:
I have just gone to a standard xp pc with nothing installed on and setup outlook express with an email account for test@groundlevelservices.co.uk using mail.groundlevelservices.co.uk as the pop3 server and was able to send emails out. Mail.groundlevelservices.co.uk is an active pop3 service
PCWalshAuthor Commented:
I was also able to receive emails more importantly!!!
PCWalshAuthor Commented:
Can someone advise if local dns could be affecting this- is there a way to see if local dns entries are causing this lack of connectivity
You need to talk to the hosintg provider of your domain.
The Routing issue on the VPS10
Possibly an access list or routing table issue.

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