Trouble sending email notifications

dbr · Post by **dbr** » Thu Apr 13, 2006 2:55 pm

Has anyone seen the following errors when trying to send an email notification?

[4/13/2006 3:56:24 PM] Connecting to <server> (SMTP) ...
[4/13/2006 3:56:24 PM] Open Error #500 (500 ESocketException: connect: WSocketResolveProto: Cannot convert protocol 'tcp', Error #11004)

I did some research and thought it had something to do with the files:

C:\Windows\system32\drivers\etc\services
C:\Windows\system32\drivers\etc\protocols

However, the protocols file has:

tcp 6 TCP # Transmission control protocol

and the services file has:

smtp 25/tcp mail #Simple Mail Transfer Protocol

Which seems to be correct.

KS-Soft · Post by **KS-Soft** » Thu Apr 13, 2006 3:53 pm

This error returned by "getprotobyname" Windows API function. Usually it happens when system file "%SystemRoot%\system32\drivers\etc\protocol" is corrupted but probably there are some other reasons for this error.
What Windows do you use? Service Pack? Any non-standard software installed? Like antivirus monitor, personal firewall, conent monitoring software?
Try to reset IP stack http://support.microsoft.com/?kbid=299357

Regards
Alex

dbr · Post by **dbr** » Fri Apr 14, 2006 7:30 am

That did the trick. Thanks!