> > i) Resolve 29.3.20.19 to the set of hostnames. If no hostname is > > returned, reject connection. > > > > Yes, however it is not recommended to use multiple PTR records for an IP > address, and the behavior is unspecified by the RFC as far as I know. If > you specify multiple PTR records, things will not work as you want. This > is not an OpenSMTPD thing but a DNS thing.
I was not aware of the behaviour being unspecified in case of multiple PTR records for an IP. Merci beaucoup Gilles for pointing it out. > > In case I have understood this incorrectly, I apologize. I have based > > this flow on my understanding of the "reject_unknown_client_hostname" > > feature of Postfix [1]. > > > > Yes, they are alike. Understood. If I may ask, are there other similar filters that you plan to implement? I did gather from the FAQ mail thread that the functionality of dkim-proxy may be implemented as an in-built filter. Dhanyavaad. Regards, ab ---------|---------|---------|---------|---------|---------|---------|-- -- You received this mail because you are subscribed to [email protected] To unsubscribe, send a mail to: [email protected]
