1. 

   edopol Member

   for two days the server has not received mail, but I can send,I get the following message

   and I don't know where to hit my head anymore

    

   edopol, Jun 22, 2023

   #1
2. 

   till Super Moderator Staff Member ISPConfig Developer

   Check if zen.spamhaus.org is set as backlist under System > server config > mail. If yes, remove it and click save.

    

   till, Jun 22, 2023

   #2

   ahrasis likes this.
3. 

   edopol Member

   resolve: thanks Till.

    

   edopol, Jun 22, 2023

   #3

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