Fix missing DNS PTR record

Job ID: 33630991

Budget: €8 – €30 EUR

Hi, our mails are not delivered to some ISPs.
Error message: The mail system : host emig.freenet.de[2001:748:100:40::8:117] said: 550-Inconsistent/Missing DNS PTR record (RFC 1912 2.1) (xxxxxx) 550 [2a03:4000:47:1e4:c891:d3ff:fef7:c5aa]:52407 (in reply to RCPT TO command)

We are using Plesk Onyx on Debian
Need fix of this,
Related categories: System Admin Linux DNS Plesk Debian