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.

An error occurred while sending mail The mail server responded: 5.1.3 Bad recipient address syntax Please check the message recipient "" and try again.

  • 1 reply
  • 2 have this problem
  • 4 views
  • Last reply by christ1

amydtm
amydtm
more options

Keep getting this message: An error occurred while sending mail The mail server responded: 5.1.3 Bad recipient address syntax Please check the message recipient "" and try again.

I don't have any addresses in my Address book that have that "" ...I THINK. Very strange, and don't know where to start looking for solution.

Keep getting this message: An error occurred while sending mail The mail server responded: 5.1.3 Bad recipient address syntax Please check the message recipient "" and try again. I don't have any addresses in my Address book that have that "" ...I THINK. Very strange, and don't know where to start looking for solution.

All Replies (1)

christ1
christ1
  • Top 25 Contributor
more options

I'd probably start looking at the copy of the message in your Sent folder.