This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

cannot send mail

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by Matt

rayrhodes4246
rayrhodes4246
more options

After installing thunderbird 78.10.1 sending an email I get the error message: “An error occurred while sending mail. The mail server sent an incorrect greeting: resomtapo-11v sys.comcast.net IP 54.153.75.67 is not permitted to send messages. Contact support if you feel this is in error.”

After installing thunderbird 78.10.1 sending an email I get the error message: “An error occurred while sending mail. The mail server sent an incorrect greeting: resomtapo-11v sys.comcast.net IP 54.153.75.67 is not permitted to send messages. Contact support if you feel this is in error.”

Modified by Matt

All Replies (1)

Matt
Matt
  • Moderator
  • Top 10 Contributor
more options

Have you contacted comcast to ask their support why? that is what the error says to do it you think there has been an error. Personally I would like to know why, but I am guessing yet again that comcast have messed up their anti spam filters on their SMTP servers by blocking their own users.