Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Archived

sending emails

Googlethunderbird. replied
dlm60

I am unable to send emails from my desktop. Pop-up message says its blacklisted. I can receive emails. I've has no trouble until a couple of days ago. Thanks Deb

I am unable to send emails from my desktop. Pop-up message says its blacklisted. I can receive emails. I've has no trouble until a couple of days ago. Thanks Deb

All Replies (2)

Hello there We have read that message We try to help.


Being blacklisted is not a Thunderbird issue on the blacklist and Thunderbird is not. You can make contact with that email provider for what reason that blacklist is created.

Are you using mail provider svthen contact them for more information. Try to find out what that reason is that you are on that so called blacklist there? Try to use temporarily other email client s for some moments to see if that issue is really only there at Thunderbird (try to use webmail for a second and them come back to Thunderbird.) That other email program Outlook or Gmail that is been used there in combination with Thunderbird client and Is become being blocked with that ip adres , if you can contact your email provider to solve that issue and ask permission there to get of there blacklist to go on that so called white list and continue to use that provider and try to get on that approved so called white list and use Thunderbird again after that solved problem there. For having a good day again with us .

Greetings googlethunderbird.

Modified by Googlethunderbird.

Hello there Being on the blacklist there it means you can receive emails normally.That blacklist only focus on the outgoing mail , that means there is no option to send mail because you went blocked for a period of time.

The most common things around for being blocked that way is that you are sending spam messages , maybe that you are sending these mails without knowing , misbehaviour is one of the common populair subjects to get blocked and to send mail again. Other emails has to be delivered are blocked by the email server even if there is some sort of incoming mail to that inbox all of the other mail is being blocked to by that presented email server for your mail that day.

What you might not see is that a lot of mail that is going around from your account that is called in the year 2025 spammy mail , that kind of mail is not really spam but a little bit spam. It might being recognised by other human when searching for these spam or anti spam bots that might have matched that issue again of the new spreading misbehaviours. Providers has owning there own list of blacklists so they can help you out if you make a clear call to them or by sending them that email to arrange a deal. To stay of that blacklist is by you. Relax and seek for these trusted feedbacks of friends or colleagues to solve this fix and show it to the present providers contact.

Greetings googlethunderbird.

Modified by Googlethunderbird.