Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Outoing mail doesn't work

more options

I have just set up Thunderbird and am receiving incoming emails but receive the following message when sending messages

An error occurred while sending mail. The mail server responded: 5.7.1 <sue.allerton@gmail.com>... Relaying denied: You must check for new mail before sending mail..

Please check the message recipient "sue.allerton@gmail.com" and try again.
I have spoken to my ISP and I have set-up the outgoing server details correctly.  

Can you help please.

I have just set up Thunderbird and am receiving incoming emails but receive the following message when sending messages An error occurred while sending mail. The mail server responded: 5.7.1 <sue.allerton@gmail.com>... Relaying denied: You must check for new mail before sending mail.. Please check the message recipient "sue.allerton@gmail.com" and try again. I have spoken to my ISP and I have set-up the outgoing server details correctly. Can you help please.

All Replies (1)

more options

If you were setup correctly your providers server would not issue the error message. It is too bad that your providers tech support is not smart enough to know that. http://kb.mozillazine.org/5.7.1_Unable_to_relay