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.

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

Help with Mailsleuth

  • 1 reply
  • 1 has this problem
  • 2 views
  • Last reply by gild

more options

I have installed Mailsleuth from the Mozilla Add-on website and when I right click on the email in the inbox the email that is to be sent to Mailsleuth I get the following message:

An error occurred while sending mail. The mail server responded: 5.1.8 - Invalid email domain for: trace-request@mailsleuthonline.com [R0109008].

Please check the message recipient "trace-request@mailsleuthonline.com" and try again.
I have installed Mailsleuth from the Mozilla Add-on website and when I right click on the email in the inbox the email that is to be sent to Mailsleuth I get the following message: An error occurred while sending mail. The mail server responded: 5.1.8 - Invalid email domain for: trace-request@mailsleuthonline.com [R0109008]. Please check the message recipient "trace-request@mailsleuthonline.com" and try again.

All Replies (1)

more options

Mailsleuth
Total of 7 reviews for this add-on. First 4 dated in 2011, 2012 and 2013 were 5 star 'raves?', but the last 3 indicate that the users were having problems.

Links to the developer's site are not working. He may have closed his site down.

https://addons.mozilla.org/en-US/seamonkey/addon/mailsleuth/

TB-38.3 Win10-PC