Len,
Yes, Nobody will acept mail for
'unknownuser_or_unknownalias_or_unknownlist@knownlocaldomain'. No, it will
not cause IMail to accept a messsage for an 'unknownlocaldomain'. But Nobody
could be pointing to a 'user@nonlocaldomain' and IMail will still accept
messages and forward it to the outside domain.
Yes, some of the open relay test sites, will indicate a 'failure' when the
email is accepted by a server, even if it is later bounced back to the
sender. BAD, if you ask me, this is NOT a real relay! Much better, if the
test site, looks for a succesful delivery to itself (an account it checks,
and looks for a non-bounce message!).
Well, some people like the capabilities of Nobody (to hold email in a POP3
account for latter collection by a pseudo-mail server), but it is not
something I (as postmaster) would use on my server. Too many things that
postmaster does are bypassed when Nobody is used (Unknown user message
bounces, for one!). Yes, someone MUST take care of all the email that it
accepts or that mailbox can become large, very quick!
Daniel Donnelly
Ipswitch Technical Support
________________________________________________________
See our Knowledge Base at http://support.ipswitch.com/kb
----- Original Message -----
From: "Len Conrad" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, June 08, 2000 9:50 AM
Subject: Re: [IMail Forum] Help Please
>
> >Do you have a Nobody alias? If there is one, it will cause your system to
> >accept email for what would otherwise be 'invalid' users. That 'Ok,
deliver
> >to alternate' message, means IMail is accepting it, but not for a 'valid'
> >user.
>
> but will Nobody alias accept mail for
>
> unknownuser@knownlocaldomain
>
> AND for
>
> anyone@nonlocaldomain?
>
> I remember some discussion about open-relay testing software would
> blacklist a server if it just accepted the relay test msg, even if the
> accepted mail was never relayed to the relay target.
>
> Some open-relay testers do require that the test msg be relayed by the
> server-under-test before winning blacklist status.
>
> Nobody alias sounds kinda dangerous, nice way to fill a disk with crap.
>
> Len
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
