sskay2000
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Is it required to register PTR record for all the domains which uses the same IP Address?
Hi,
We have lot of subsidiary companies which uses a common mail server with their own SMTP domains (Multi tenant) like 123@abc.com, 123@def.com. The MX record of all the companies are pointed to the same IP address (Say 1.1.1.1). I need to register PTR record for the domains. So please guide me is it required to register PTR record for all the MX record which uses the same IP Address?
Santosh
We have lot of subsidiary companies which uses a common mail server with their own SMTP domains (Multi tenant) like 123@abc.com, 123@def.com. The MX record of all the companies are pointed to the same IP address (Say 1.1.1.1). I need to register PTR record for the domains. So please guide me is it required to register PTR record for all the MX record which uses the same IP Address?
Santosh
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Commonly mail servers will check PTR records to determine if your server is legitimate. Pretty much any PTR record will be fine, provided it does not hint at being a dynamic IP. So, mail.multiserver.com is fine, dynamic.modempool.billsisp
The actual PTR record will need to be added to the DNS server of the organization authoritative for the IP range, not the domain. Usually this will be your ISP.
The actual PTR record will need to be added to the DNS server of the organization authoritative for the IP range, not the domain. Usually this will be your ISP.
ASKER
Thank you very much. I understand that we need to have only PTR record for the Mailrelay server name (Ex: esmtp.abc.com) eventhough we have multiple subsidiaries hosting emails in our server with their own SMTP domains. Am I correct?
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