Error "policy violation" - emails from domain to addresses similar to recipients of spams

Emaily > Chybová hlášení smtp serveru smtp.forpsi.com
You are reading this article probably, because you have tried to send an email via smtp server smtp.forpsi.com and such error was displayed
 
550 5.1.0 cNkj1y0022zrrQM01NkjaD policy violation, see https://support.forpsi.com/kb/a4656
 
More than 50 emails to addresses similar to recipients of spams were sent from your domain.
  
Because it is a scenario of abusing the email accounts of a domain to spamming, smtp access to the smtp server smtp.forpsi.com of your all accounts of your domain was temporarily disabled (access via POP3, IMAP and webmail still works).
 
The blocking of your email accounts will expire no later than in 24 hours.
  
Please, contact our customer support with an authorized ticket on https://support.forpsi.com/Main/frmTickets.aspx . We will check the situation and enable smtp access again.
 
Article ID: 4656, , Modified: 3/18/2025 at 9:52 AM

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