[GRLUG] Postfix Error info

[megadave]

Does your receiver-SMTP not log the transactions, and provide specific
details for cases where it rejects?

It is certainly always better if you can specifically describe what the
sending server is doing wrong.

One issue that used to be common with windows based servers is the use of
underscore in the "host name". Such names are illegal per RFC. Some
receivers accept them, some reject, some can be configured.

Ultimately, if the sender wishes to be able to send to you, it may come
down to them demanding that their server operator identify and fix the
problem.


On Tue, Sep 10, 2013 at 11:32 AM, L. V. Lammert <lvl at omnitec.net> wrote:

> Occasionally we run across a misconfigured sending email server that
> throws errors [causing a reject here] such as "Hostname not found" [et
> al].
>
> In trying to actually get the problem resolved at the sender, however, I
> have been unable to find any good explanations of such error, or where it
> occurs in the MTA handshake. IOW, "This might be the problem" is not very
> convincing to a chap that thinks their system IS configured properly, and
> they often ignore the problem entirely because so many OTHER email servers
> ignore such problems.
>
> Has anyone seen any good descriptions I can cite to help confince others
> to fix a problem with their mail server? (*Especially* Windoze, one of the
> most common offenders.)
>
>         TIA!
>
>         Lee
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