Your mail server does not accept our letters.
This is the message we receive when we send you an email.
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
host smtp.geh.aero [184.108.40.206]
SMTP error from remote mail server after end of data:
554 5.7.1 DNS Blacklisted by dnsbl-3.uceprotect.net
Reporting-MTA: dns; mail.galaktika-soft.com
Remote-MTA: dns; smtp.geh.aero
Diagnostic-Code: smtp; 554 5.7.1 DNS Blacklisted by dnsbl-3.uceprotect.net