TPW's profile

Frequent Visitor

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6 Messages

Thu, Dec 10, 2020 1:00 PM

Error when sending email

I tried Windows Live Mail, Microsoft Mail, and Thunderbird. I keep getting this error message

 

An error occurred while sending mail: The mail server sent an incorrect greeting: resomta-ch2-20v.sys.comcast.net resomta-ch2-20v.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available, please contact support.

Responses

Regular Visitor

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3 Messages

6 m ago

I feel your pain--inbound but no outbound service.  What worked for me--in Thunderbird Outgoing Server settings, I had, for some reason, two smtp.Comcast.net servers listed.  One had for username, my actual username, while the other had my full username@comcast.net.  Apparently, TB was trying to authenticate with the second, full address.  When I dropped the "@comcast.net"  TB works.  Since the same fix on my wife's separate acct with the same issue, I presume the latest TB update (78.6.0) must have tightened some security or some similar scenario implemented at Comcast.

 

Prior to spotting this fix, I had done a lot of fiddling with anti-virus/firewall, etc. to no avail.  Clue was that Comcast mail still worked on the web app and that both household accts went down at the same time (thus, not machine specific).  May the eforce be with you!

Regular Visitor

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3 Messages

6 m ago

Well, that was premature.  Although the above suggestion instantly solved the problem yesterday, outbound service failed again this morning.  I now have a ticket to tier 2 support.  Stay tuned.

 

Confusing FYI - printed instructions from Comcast illustrate using the full email addr as the username for TB but switching outbound settings back to full email username made no difference today.

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