I have a web server that talks to a mail server when sending an email. Now I'm hosting my own DNS, however, since then I see that one of the email headers says:
Received: from webserver.domain.com (unknown [192.168.0.1])
webserver.domain.com has the IP
192.168.0.100 and the router where is connected has
192.168.0.1, before I used to see the hostname of 192.168.0.1 (router.domain.com)
192.168.0.rev zone I have:
18.104.22.168.in-addr.arpa. IN PTR router.domain.com.
router IN A 192.168.0.1
/etc/resolv.conf on the web/mail server:
domain domain.com search domain.com nameserver 192.168.0.101 nameserver ISP address
Am I missing something? Thanks!