Comments on: Users can’t send/receive mails using smtp. http://itknowledgeexchange.techtarget.com/itanswers/users-cant-sendreceive-mails-using-smtp/ Fri, 24 May 2013 19:50:07 +0000 hourly 1 By: tomliotta http://itknowledgeexchange.techtarget.com/itanswers/users-cant-sendreceive-mails-using-smtp/#comment-101297 tomliotta Thu, 05 Jan 2012 20:45:37 +0000 #comment-101297 …this is the only branch which has an issue. Where can i check the blocked port from?

Can you describe the connectivity for this branch? Is this the company’s network? Or does the branch connect through a separate ISP?

Tom

]]> By: flojo http://itknowledgeexchange.techtarget.com/itanswers/users-cant-sendreceive-mails-using-smtp/#comment-101279 flojo Thu, 05 Jan 2012 11:39:32 +0000 #comment-101279 Rechil thanks for the responce. I have changed the port to 587 and disabled the Pc firewall but still no change. I have done a telnet from the non working machine and it’s not going through while the working machine is okay. This means the port is blocked but from where?

NB. My exchange server is used by all my branches and this is the only branch which has an issue. Where can i check the blocked port from?

]]> By: rechil http://itknowledgeexchange.techtarget.com/itanswers/users-cant-sendreceive-mails-using-smtp/#comment-101272 rechil Thu, 05 Jan 2012 08:54:50 +0000 #comment-101272 Probably the port combination ad ssl both are not working properly. U can enable ssl with port 465, or else try a non-ssl port like 587 or 25. Try to change the send port to 587 and see if it works. This is my assumptions. One more thing might be happened If u r using personal firewall, try reduce the security level / disable it to observe if it happens again. Make sure the SMTP cpuld be blocked….. try to test by going to CMD and type as: telnet mail.<yourdomain> 25. And if it shows any message, then it is OK else it is blocked.

Best to see here from MSOL Guidance

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