Unable to send emails with Thunderbird

Solved
Jac34 Posted messages 319 Status Member -  
Jac34 Posted messages 319 Status Member -
Hello,

My problem is simple. In Thunderbird, I have 4 accounts: one Sfr, one Laposte, another Free, and finally one Gmail.
Everything was going well; I was sending and receiving emails from all four. One day, I noticed that when I try to send from SFR and Laposte, I get the following message:

An error occurred while sending the email. The mail server responded: 554 5.7.1 Service unavailable. Client host 88.xxx.xxx.xxx rejected for spamming issues. Client address 88.126.108.105 blocked for spam incident; http://www.spamhaus.org/query/bl?ip=88.126.108.105. Please check the recipient's address ..@... and try again.

No issues with Free and Gmail.
My ISP is Free, and I have no trouble receiving my emails with all four.

Do you have any idea? Thank you in advance.

Configuration: Windows / Firefox 77.0

4 answers

  1. Anonymous user
     
    Hello Jac34,

    "rejected for spamming issues" means that you are considered a spammer because too many recipients or too many emails sent

    Change your account settings to send authenticated emails using SSL and your username = full email address from your ISP.
    1
  2. Jac34 Posted messages 319 Status Member 7
     
    Hello,
    I don't quite understand what you mean. I send my emails to two or three people.
    On the other hand, in the account settings, I have
    Server name: pop.sfr.fr, imap.laposte.net, imap.free.fr, imap.gmail.com
    Connection security: SSL/TLS for all.
    Does that mean anything to you?
    0
  3. Jac34 Posted messages 319 Status Member 7
     
    Hello, thank you for the solution.
    0