We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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.

Sometimes can send emails from Thunderbird, sometimes I can't

  • 1 reply
  • 1 has this problem
  • 11 views
  • Last reply by vickiltc

vickiltc
vickiltc
more options

Sometimes I can send emails from my Thunderbird account, sometimes I can't. When I can't, I get an error message that claims the message could not be sent because the outgoing server timed out. What????? I already went through your entire list of "trouble shooting" items. Still won't work today. Did yesterday. Not the day before, but did the day before that. How weird!

Sometimes I can send emails from my Thunderbird account, sometimes I can't. When I can't, I get an error message that claims the message could not be sent because the outgoing server timed out. What????? I already went through your entire list of "trouble shooting" items. Still won't work today. Did yesterday. Not the day before, but did the day before that. How weird!

All Replies (1)

vickiltc
vickiltc Question owner
more options

So I just went back & tried again, and I got a whole new error message!

"An error occurred while sending mail: The mail server sent an incorrect greeting: 5.7.1 [C20] Message blocked.."

Cannot understand what is going on.