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

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

My wife uses Thunderbird client and it has stopped sending emails -see below

  • 5 àwọn èsì
  • 1 ní ìṣòro yìí
  • 5 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ ianskeeby

more options

An error occurred while sending mail. The mail server responded: 5.4.6 <email address>: Recipient address rejected: Email Sending Quota Exceeded.

Please check the message recipient "email address" and try again.

My wife's computer has stopped sending emails following a reject from a group mailing which has worked previously. Now it seems to block all outgoing email addresses, single addresses or multiple addresses. If it is being blocked, what is blocking it?

An error occurred while sending mail. The mail server responded: 5.4.6 <email address>: Recipient address rejected: Email Sending Quota Exceeded. Please check the message recipient "email address" and try again. My wife's computer has stopped sending emails following a reject from a group mailing which has worked previously. Now it seems to block all outgoing email addresses, single addresses or multiple addresses. If it is being blocked, what is blocking it?

All Replies (5)

more options

The error is from your email provider. It states you sent more than your quota of messages. I suggest you discuss your sending limits with the provider.

more options

I will try what you suggest Thanks

more options

I have checked, my provider is not blocking email nor is it over quota. Could it be Thunderbird puts temporary block on email addresses if large number or recipients selected, I understand this can happen to stop spammers who hack your email? I am not sure what limit is on Thunderbird?

more options

The error says the "mail server". Thunderbird does not have servers, your provider does. Thunderbird does not have limits or block messages. Tell your provider nice try to deflect the blame.

more options

Thanks I wonder if it is Windows defender? I am baffled.