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I have Windows 7 and running outlook 2007 (wtih exchange mailserver). I want to switch to Thunderbird. Have spent some time to search both on SU and google without really finding a succinct answer to my question. When I setup thunderbird, I got existing emails in my inbox and there is a outgoing server on Thunderbird. But when I try to send an email I get:
The message could not be sent because connecting to SMTP server
xxx.mycompany.com failed. The server may be unavailable or is refusing
SMTP connections. Please verify that your SMTP server settings are
correct and try again, or contact the server administrator.
Using ProcessExplorer I found out that Outlook uses an IP with a strange port 52084. I have tried this IP and port as an outgoing SMTP server in Thunderbird. And when I do that, the above error does not pop up immediately but I get an indefinite progress bar showing thunderbird trying to send message. Also tried with the same IP ports 25, 465 and 587, 585 with no success. When I use port 995, I get the following error:
An error occurred sending mail: The mail server sent an
incorrect greeting: +OK The Microsoft Exchange POP3 service
is ready..
Port 993:
An error occurred sending mail: The mail server sent an incorrect
greeting: * OK The Microsoft Exchange IMAP4 service is ready..
user3111525
Posted 2014-03-11T11:39:23.537
Reputation: 145
The port you are seeing is dynamic and on your side, not on the SMTP server side. – Matteo – 2014-03-11T11:46:57.527
@Matteo I was thinking the same, thanks for confirming this. How do I find out the port that is actually used? – user3111525 – 2014-03-11T11:47:51.067
Also try secure connection ports 585 and 995 – Matthew Williams – 2014-03-11T11:56:49.177
@user3111525 What's your name kid? – Firee – 2014-03-11T12:17:32.917
@Firee Frank, why? – user3111525 – 2014-03-11T12:22:38.667
1If you have Exchange server, why are you using POP3/SMTP and moving to Thunderbird? Exchange is expensive and if your company is not using MAPI / Outlook Anywhere, you're missing all its best sharing features - shared contacts and calendars, etc. – TessellatingHeckler – 2014-03-11T14:16:41.807
@TessellatingHeckler Good point! However, I am preparing to migrate to Linux. – user3111525 – 2014-03-11T16:33:31.020
If you want to find out how Outlook is configured then go into your Account settings in Outlook and make note of the ports ands settings. – joeqwerty – 2014-03-11T17:00:40.923
@user3111525 Frank, its just that id's like 'userXXX' seem very robotic, a human touch/image is required sometimes... This is Sam here.. – Firee – 2014-03-12T07:19:49.577