Re: Sporadic relay failures using a hash in mynetworks.

[Josef Karthauser <joe@xxxxxxxxxx>]

On Sun, Oct 17, 2004 at 04:08:32PM -0400, Wietse Venema wrote:
> Josef Karthauser:
> 
> > I don't see any evidence that the virtual.db map is failing at all so I
> > am reluctant to think that it a problem in the db lookup code.
> 
> Consider how few lines of Postfix code are between the logging of the
> following lines:
> 
> > Oct 15 13:01:57 jonah postfix/smtpd[45485]: match_hostaddr: 80.0.157.230 ~? hash:/usr/local/etc/postfix/mynetworks(0,100)
> > Oct 15 13:01:57 jonah postfix/smtpd[45485]: dict_lookup: 80.0.157.230 = (notfound)
> 
> Consider that that same Postfix code does all access DB file lookups.
> 
> Consider that the same Postfix DB module is used for all DB file lookups.
> 
> Consider that no-one else is experiencing this.  
> 
> Consider that I run Postfix on FreeBSD too.
> 
> I think it is a site specific problem.
> 

For the same reason considering how many other systems on the O/S use
the DB hash code, and that the DB hash code works well specifically for
virtual.db and aliases.db I can't see how it's an O/S problem either.

Do you have any suggestions as to how I might proceed to debug this
problem?  Where's the fragment of code in postfix which does the
reading? Maybe I can extract this and run it continuously to see how
often it fails.

Joe
-- 
Josef Karthauser (joe@xxxxxxxxxx)	       http://www.josef-k.net/
FreeBSD (cvs meister, admin and hacker)     http://www.uk.FreeBSD.org/
Physics Particle Theory (student)   http://www.pact.cpes.sussex.ac.uk/
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