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by rick.philips9 1 view

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The following error appears when I attempt to send mail (outlook express 6 in Win 2000 pro)that contains more than just a few words. (a test e-mail with 2 words, sends just fine)I have no problem using the identical setup (same account)in Win 98 with oulook express6.Here is the Error:

Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Subject 'test',
Account: 'incoming.verizon.net',
Server: 'outgoing.verizon.net',
Protocol: SMTP,
Server Response: '421
out003.verizon.net Lost connection to [151.204.115.186]', Port: 25,
Secure(SSL): No, Server Error: 421, Socket Error: 10053, Error Number: 0x800CCC0F

3 replies

by acattr

I wish I can give you a definate answer, but there are a multitude of items can cause this including routers, mtu sizes, antivirus programs, etc.

http://tinyurl.com/307a

Use the link above as it will give you different suggestions to try.

by rick.philips9

Thanks for the info but I had already contacted Verizon and they suggested setting the MTU to 1492 in the router. I have done this registry tweak to tune-up a VPN connection but didn't think it necessary to change a non VPN account that had been working. Problem Solved

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