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.

The RETR command did not succeed.

  • 2 replies
  • 29 have this problem
  • 4 views
  • Last reply by jtcavuotisr

ykt2369
ykt2369
more options

Need help in the following error message. Is this a problem with Thunderbird or it is a problem with MS outlook365? Any solution to fix this?

The RETR command did not succeed. Error retrieving a message. Mail server outlook.office365.com responded: Server Unavailable. 21

Need help in the following error message. Is this a problem with Thunderbird or it is a problem with MS outlook365? Any solution to fix this? ''' The RETR command did not succeed. Error retrieving a message. Mail server outlook.office365.com responded: Server Unavailable. 21'''

All Replies (2)

jtcavuotisr
jtcavuotisr
more options

I am using Thunderbird to connect to Comcast Xfinity email server. mail.comcast.net port 995

jtcavuotisr
jtcavuotisr
more options

mail.comcast.net sending RETR error