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.

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

Can't send out emails due to message rejected code AUP#SNDR

  • 3 replies
  • 0 have this problem
  • 26 views
  • Last reply by david

more options

Can't send out emails due to message rejected code AUP#SNDR. I can receive emails but can't send out.

Can't send out emails due to message rejected code AUP#SNDR. I can receive emails but can't send out.

All Replies (3)

more options

Your emails are apparently violating the receiver's sender use policy. For example, you may be sending attachments that are considered insecure.

more options

I did not send out any attachments with the emails being rejected... any other solutions...

more options

Are your messages rejected by every email provider, or just specific ones? That may help in figuring out where to search.