Forum Mailserver and DNS configuration

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Forum Mailserver and DNS configuration

Postby marvelli2 » Sat May 19, 2018 6:19 am

Hi Admin team,
I would have loved to register with my regular mail domain, but I had some issues with your mailserver (or DNS) configuration.
I night not be the only one with a pretty strict postfix configuration, and therefore it'll be great if you could apply the fixes.
The mailserver tells helo=<mixxx.org>, but it doesn't have a DNS entry with the same IP address.

Here is a section of my postfix log:
May 19 07:51:48 lemaker postfix/smtpd[26031]: warning: hostname mixxx.org does not resolve to address 69.195.146.38
May 19 07:51:48 lemaker postfix/smtpd[26031]: connect from unknown[69.195.146.38]
May 19 07:51:48 lemaker postfix/smtpd[26031]: NOQUEUE: reject: RCPT from unknown[69.195.146.38]: 550 5.7.1 Client host rejected: cannot find your hostname, [69.195.146.38]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<mixxx.org>
May 19 07:51:48 lemaker postfix/smtpd[26031]: disconnect from unknown[69.195.146.38]

If your mailserver and your webserver run on different platforms, you may use helo=<mail.mixxx.org> and then set the A and PTR records in the DNS accordingly.
Otherwise someone can easily spoof an email from your site.

Best
Werner
marvelli2
 
Posts: 3
Joined: Sat May 19, 2018 5:55 am

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