Network problems at

Doug Hardie bc979 at
Sat Jan 14 00:11:01 UTC 2017

> On 13 January 2017, at 12:04, James B. Byrne via freebsd-questions <freebsd-questions at> wrote:
> Now I am getting this message:
>                  The mail system
> <freebsd-questions at>: host[]
> said: 450
>   4.7.25 Client host rejected: cannot find your hostname,
> [] (in
>   reply to RCPT TO command)
> This also started to show up yesterday. Is there something going on
> with DNS somewhere?

I have been getting that sporadically for a few weeks now. is the only mail server that I send to that has the issue.  Some things I found on Google indicated it was caused by either an incorrect RDNS entry or  SPF entry.  I have no effective control over the RDNS and correcting the SPF entry had no effect.

— Doug

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