How does 1 best handle a ptr record with 2 fqdn ?
in an attempt to avoid 'false positive' in ptr lookup ?
ptr with 2 domain names
Re: ptr with 2 domain names
You don't do that, you have one PTR record to the FQDN of the server for the primary Domain on your ZCS server. You could have found the answer with an internet search such as this: https://www.startpage.com/do/dsearch?qu ... ge=english ... and specifically this answer: https://serverfault.com/questions/61870 ... ecommended
It would help if you had actually described in detail what you were trying to do and why you think it was necessary.
It would help if you had actually described in detail what you were trying to do and why you think it was necessary.
Re: ptr with 2 domain names
I know that, I am inquiring as to how you deal with a mail server that does have 2 fqdn.
I thought there was an rfc, that prohibits more than 1 fqdn per ip.
Here is the ip. 198.160.191.65 ( mailserver trying to send email to a domain I host)
as I have zimbra doing a reverse lookup, it rejects the incoming email, as the 2nd fqdn is the correct answer.
I thought there was an rfc, that prohibits more than 1 fqdn per ip.
Here is the ip. 198.160.191.65 ( mailserver trying to send email to a domain I host)
as I have zimbra doing a reverse lookup, it rejects the incoming email, as the 2nd fqdn is the correct answer.
Re: ptr with 2 domain names
You would probably have to whitelist that IP as described here:
https://wiki.zimbra.com/wiki/IP_Address_whitelisting
Which isn't ideal if that host is actually a source of spam in addition to legitimate email.
https://wiki.zimbra.com/wiki/IP_Address_whitelisting
Which isn't ideal if that host is actually a source of spam in addition to legitimate email.