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category icon Do you perform reverse DNS checks?

Yes, we do perform Reverse DNS checks. If your email is being rejected due to a reverse dns error this is due to a miss configuration at a DNS level with the sending server.

A reverse pointer is an RFC requirement for SMTP servers and other internet hosts a like as desribed below:

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RFC 1033 in the "INSTRUCTIONS" section, and later, 
RFC 1912 Section 2.1 state: "Every Internet-reachable host should have a name"; and "make sure your PTR and A records match".
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