LGarvin wrote:
64.18.4.11 | WARNING: The hostname in the SMTP greeting does not match the reverse DNS (PTR) record for your mail server. This probably won't cause any harm, but may be a technical violation of RFC5321
64.18.4.10 | WARNING: The hostname in the SMTP greeting does not match the reverse DNS (PTR) record for your mail server. This probably won't cause any harm, but may be a technical violation of RFC5321
The DNSstuff report for my domain also gets this message. And it is complete BS. I read RFC5321. There is no mention of PTR records anywhere in that RFC.
Also, there are several spam filtering services which have paying customers. The one I use is AppRiver. This means my incoming mail goes to their servers (through a CNAME record, which points to them) and they forward it to my server. My mail server handles all outgoing mail directly. I have no control over the PTR record for their servers. As far as I can tell, this conforms to RFC5321 perfectly.
If I am wrong, and RFC5321 does mention PTR records, I would be grateful to anyone who can quote the relevant section.
