Feature request - ORF Forums

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1

Please add check for reverse obtained (sub)domain and sender's domain match.
For example mail from 1.2.3.4 = test.com fail for sender
And mail from 2.3.4.5 = smtp.test.com for - OK.

by nvs 4 years ago
2

@nvs: There is no RFC requirement that says the PTR record of a sender IP should match the domain part of the sender's email address. This would result in an unacceptably high number of false positives: many legitimate domain owners use external providers for sending emails (Google Apps, Exchange Online, etc).

by Krisztián Fekete (Vamsoft) 4 years ago
(in reply to this post)

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