[Cialug] Hostname issue

[David Champion]

dig says it does:

;; QUESTION SECTION:
;236.99.186.66.in-addr.arpa.    IN      PTR

;; ANSWER SECTION:
236.99.186.66.in-addr.arpa. 85827 IN    PTR     mail2.gilstermarylee.com.


On Tue, Nov 25, 2014 at 9:46 AM, Jonathan A. Kollasch <jakllsch at kollasch.net
> wrote:

> On Tue, Nov 25, 2014 at 09:38:09AM -0600, L. V. Lammert wrote:
> > Trying to assist a friend in fixing an issue with their email system, ..
> > they appears to be using a Barracuda appliance (per hostname), yet it
> > appears to not be sending a valid hostname:
> >
> > ================
> >
> > Nov 23 03:38:37 mx2 postfix/smtpd[5951]: NOQUEUE: reject: RCPT from
> > unknown[66.186.99.236]: 450 Client host rejected: cannot find your
> > hostname, [66.186.99.236]; from=<rhayden at gilstermarylee.com>
> > to=<lvl at omnitec.net> proto=ESMTP helo=<barracuda.gilstermarylee.com>
> >
> > ================
> >
> > I do know they are switching providers, but I do not think that would
> > affect the issue. Any suggestion on how to troubleshoot this problem?
>
> This sounds like 66.186.99.236 doesn't have reverse DNS records.
>
>         Jonathan Kollasch
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