Re: dns problem with mailing list server

CC to www list.

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Dana Hudes wrote:
> Hi,
>
> The mail relay used for the dbdpg-general mailing list, 200.46.204.17,
> does not have consistent reverse DNS entry (it does have a reverse entry).
>
> Specifically, while gborg.postgresql.org has address 200.46.204.176 the
> reverse entry 176.204.46.200.in-addr.arpa domain name pointer
> svr3.postgresql.org.
>
> But svr3.postgresql.org. does not have a forward entry.
>
> This then falls afoul of the anti-spam measures recommended in RFC2055 and
> the procedures recommended at e.g. www.postfix.org (I use the postfix mail
> relay).
>
> If someone adds a forward entry for svr3.postgresql.org resolving to
> 200.46.204.176 all will be well.
>
> Until then my, and many other, mail relays will think mailing list traffic
> is from a fraudulent host and reject the mail (albeit with a 450 status,
> indicatitive of a temporary failure;  potentially when the situation is
> corrected the most recent mail will then be delivered).
>
> Thanks
>

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