Author Topic: how to setting rdns ' Reject the request when the hostname in the client HELO"  (Read 3512 times)

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Helo admin please help me, setting rdns

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Postfix Mail Server Manager
Rebuild your mail server with Amavisd, Spamassassin, ClamAV (AntiSpam and AntiVirus Protection)
Hostname needs to have a valid A record and rDNS/PTR set for successful email delivery.
**Reject the request when the hostname in the client HELO (EHLO) command has no DNS A or MX record. The unknown_hostname_reject_code specifies the response code to rejected requests (default: 450). "