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Strange telnet issue

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MikeBatters

Technical User
Jan 13, 2005
417
GB
I have a batch of Windows 2003 servers which have the same problem. If I try to telnet from any of these servers to port 25 on ANY remote device i instantly get a failed to connect message. I can telnet to the same remote devices on port 25 from other machines and it is just this small batch of W2003 that have the problem.

The servers are a fix of W2003 with and without SP1 and none of them are running any software firewalls at all.

I am hoping someone has come across this before becuase it is very obscure and Technet etc return nothing helpful at all.

Thanks in Advance...

Mike

*************************************

Remember - There is always another way..........I just haven't found out what it is yet!

[yinyang]
 
Have you set connection restrictions on the SMTP virtual servers? i.e. "All all but the following to connect"

PSC

Governments and corporations need people like you and me. We are samurai. The keyboard cowboys. And all those other people out there who have no idea what's going on are the cattle. Mooo! --Mr. The Plague, from the movie "Hackers
 
Thanks for the reply. There are no restrictions at all. It appears to be a restriction in the telnet.exe client (??)...

Mike

*************************************

Remember - There is always another way..........I just haven't found out what it is yet!

[yinyang]
 
Perhaps the servers you are having trouble with don't have SMTP on them at all? Or the service is shut down?

PSC

Governments and corporations need people like you and me. We are samurai. The keyboard cowboys. And all those other people out there who have no idea what's going on are the cattle. Mooo! --Mr. The Plague, from the movie "Hackers
 
The target devices do have the SMTP Service installed and running and i can connect to the same devices from a different client machine.

I have actually tried conencting to many many different SMTP servers (other sides of VPNs etc) without joy.

I have actually found one of these W2003 servers that can connect to the internal SMTP server but it appears to have the same SPs & hotfixes as some of the others which have the problem.

Thanks fo rthe input - any more suggestions are welcome.

Mike

*************************************

Remember - There is always another way..........I just haven't found out what it is yet!

[yinyang]
 
Do you have a routing issue? Is your source host on the same subnet as the destination hosts? Multiple routers on the same network segment can cause wierd issues if not configured right.

PSC

Governments and corporations need people like you and me. We are samurai. The keyboard cowboys. And all those other people out there who have no idea what's going on are the cattle. Mooo! --Mr. The Plague, from the movie "Hackers
 
It is all within the same subnet unfortuntely.

Cheers though.

Mike

*************************************

Remember - There is always another way..........I just haven't found out what it is yet!

[yinyang]
 
You've got me stumped, Mike. Anyone else want to take a shot?

Sorry[sadeyes]

PSC

Governments and corporations need people like you and me. We are samurai. The keyboard cowboys. And all those other people out there who have no idea what's going on are the cattle. Mooo! --Mr. The Plague, from the movie "Hackers
 
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