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.

ابحث في الدعم

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

The RETR command did not succeed.

  • 2 (ردّان اثنان)
  • 29 have this problem
  • 4 views
  • آخر ردّ كتبه jtcavuotisr

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)

more options

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

more options

mail.comcast.net sending RETR error