POP3 network problems

8 computers Win XP sp1 connected, via a switch to ADSL router (Intertex). The settings on the adsl router are set on there lowest secutity setting. The problem is that pop3 email isn't coming in. SMTP server, by service provider is ok. POP3, hosted by domain server will not connect and gets error message. I can connect to the pop3 from outside the LAN and I am confused. Any suggestions gratefully received. All worked fine until recently when I added two more computers and an additional switch. I have checked it out and all seems ok. POP3 is all that doesn't work
bugwapAsked:
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sunray_2003Commented:
Check with your ISP if there is some problem with their pop server.. Also if you can give the error message it would easy to help you

Sunray
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bugwapAuthor Commented:
Yeah, I will take a look tomorrow. Pop3 server being hosted by domain provider who says it works fine. Will get the exact error & post it
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stevenlewisCommented:
any other firewalls in place (software)?
any rules blocking port 110, or 25?
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bugwapAuthor Commented:
The firewall in the router is not enabled at present
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drev001Commented:
Try telnetting into the isp's pop3 server:

telnet pop3server 110
user yourusername
pass yourpassword
list

This should do a very basic check on whether you can contact, login and query the remote pop3 server from the OS.
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bugwapAuthor Commented:
this is the message body of the error, edited out the server names obviously, still not playing, any ideas?

Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: , Server: 'mail..co.uk', Protocol: POP3, Port: 110, Secure(SSL): No, Error Number: 0x800CCC0F
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bugwapAuthor Commented:
sorted thanks
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