missing DNS record for 'helo=<mx.windowmaker.org>'

Christian <[email protected]> Mon, 8 Aug 2016 17:32:26 +0200

Newsgroups	gmane.compw.window-managers.windowmaker.devel
Message-ID	<[email protected]>

In real live you expect that the person opposite you is using 'correct'
name when introducing ...
... IMHO the same should be with MailServer and 'HELO'
when using 'helo=<mx.windowmaker.org>' there should be a vaild DNS
record and valid reverse record.

See:
Aug  8 15:15:54 chaos postfix/smtpd[30595]: connect from
jaqque.xen.prgmr.com[64.62.173.38] Aug  8 15:15:54 chaos
postfix/smtpd[30595]: NOQUEUE: reject: RCPT from
jaqque.xen.prgmr.com[64.62.173.38]: 550 5.7.1 <mx.windowmaker.org>: Helo
command rejected: Host not found;
from=<[email protected]>
to=<[email protected]> proto=ESMTP helo=<mx.windowmaker.org>

And same is for IPv6:
Aug  8 15:29:58 chaos postfix/smtpd[30669]: connect from
unknown[2001:470:1:41:a800:ff:fe59:ad26] Aug  8 15:29:58 chaos
postfix/smtpd[30669]: NOQUEUE: reject: RCPT from
unknown[2001:470:1:41:a800:ff:fe59:ad26]: 550 5.7.1 Client host
rejected: cannot find your hostname, [2001:470:1:41:a800:ff:fe59:ad26];
from=<wmaker-dev-bounce-585-3b3cb91547090ee3b507fa2c31cf2b1c@lists.windowmaker.org>
to=<[email protected]> proto=ESMTP helo=<mx.windowmaker.org> Aug  8
15:29:58 chaos postfix/smtpd[30669]: disconnect from
unknown[2001:470:1:41:a800:ff:fe59:ad26]

Can you please add a valid DNS record for 'mx.windowmaker.org'.
Thank you

-- 

Christian
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