On 31.01.23 15:51, Michael wrote:
i have multiple nullclients with the exact (!) same main.cf. all but
one show the received header as expected, e.g.:
Received: from host.domain.tld (host.domain.tld [10.0.0.1])
^^helo string^^ ^^dns name^^ ^^remote IP
[...]
Received: by host.domain.tld (Postfix, from userid 1000)
^ $myhostname ^
as you can see, in the upper 'Received' header both hostnames are
fully qualified and identical, which is what i would expect.
but there is one single host, which doesn't:
Received: from host.domain.tld (host1 [10.0.0.2])
[...]
Received: by host.domain.tld (Postfix, from userid 1000)
[...]
here, the second hostname is not only not fully qualified, but is also
an entirely different hostname.
do you have local DNS for 10.0.0.2 range?
or, do you use dnsmasq?
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