On Tue, 20 Dec 2022 10:08:51 -0600 Noel Jones <njo...@megan.vbhcs.org> wrote:
> > > On Dec 20, 2022, at 9:08 AM, Janos Dohanics <w...@3dresearch.com> > > wrote: > > > > ?Hello, > > > > I have asked my customer's ISP to set reverse DNS as > > "smtp.customer.com" for the IP address the ISP newly assigned to > > them. > > > > They set the reverse DNS as "customer.com", which will pass the > > requirement set by the restriction > > "reject_unknown_reverse_client_hostname" or similar restrictions > > used by other MTAs. > > > > Can I assume that this is "good enough" or should I pester the ISP > > to have "smtp.customer.com" set? > > > > Would you please advise? > > > > -- > > Janos Dohanics > > The goal is to have a matching PTR and A record. If you are able to > have an A record of customer.com pointing to only that IP address, > then you can use it as is. If the customer has multiple IPs, > particularly if they have a web server on a different IP, then you?ll > need to get this corrected. > > ? Noel Jones Thanks for your reply; I have asked the ISP to correct the record and they did. -- Janos Dohanics
