Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

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

Este fío arquivouse. Faga unha nova pregunta se precisa axuda.

An error occurred while sending mail. The mail server responded: Spam detected by content scanner.

  • 1 resposta
  • 2 have this problem
  • 6 views
  • Last reply by david

vmarcantonio
vmarcantonio
more options

Hello Mozilla Support,

I am not able to send email. I receive the following message: An error occurred while sending mail. The mail server responded: Spam detected by content scanner.

I have been using Thunderbird for several months and haven't had a problem sending email until now. I am definitely not sending spam. I haven't made any changes to my account or server and it is not due to a firewall.

Please help.

Thank you, Victor

Hello Mozilla Support, I am not able to send email. I receive the following message: An error occurred while sending mail. The mail server responded: Spam detected by content scanner. I have been using Thunderbird for several months and haven't had a problem sending email until now. I am definitely not sending spam. I haven't made any changes to my account or server and it is not due to a firewall. Please help. Thank you, Victor

All Replies (1)

david
david
  • Top 10 Contributor
more options

Check content of message as sent to see if there is additional content, such as a sig attachment that some antivirus software insert.