Author: Phil Pennock Date: To: Regid Ichira CC: exim-users Subject: Re: [exim] Am I right that no_more has no effect within the
included simple routers?
On 2012-05-28 at 16:42 -0700, Regid Ichira wrote: > I think the no_more has significance for dnslookup_relay_to_domains and
> for dnslookup. It has no effect for nonlocal and smarthost.
> One advantage for keeping the no effect no_more in place is not making
> unnecessary changes. One might argue whether keeping that no effect
> directive makes the default configuration more, or less, readable.
> My opinion is that a concise configuration is better.
Explicit conveys information about intent, and acts as a backup for
unexpected problems and changes upstream.
If asked to debug such a problem on the mailing-list, and the last
Routers for some domains did not have no_more on them, my first step
would be to ask the admin to add no_more and see if that resolves the
issue. If it does, I can point to their DNS problems. If it doesn't,
it's probably worth spending more time on it, trying to pick apart their
problem.
It's a bit like coding: if you write the cleverest code you can, relying
upon detailed knowledge of every part of the language, it's much harder
to debug.
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan
