From: Wietse Venema (no email)
Date: Fri Feb 01 2002 - 07:34:27 EST
So they F8ked up Berkeley DB and broke null-length keys.
Were you running any particular Berkeley DB version?
Wietse
Sven Michels:
> Hi list,
>
> most of you heared from the problem with the recent
> postfix releases and Berkley DB. I've a maschine with
> postfix 1.1.2 and the same problem... so i figured out
> what happened.
>
> Problem was:
> postfix/smtpd[29132]: fatal: error reading /etc/postfix/sender_access.db:
> Invalid argument
>
> that happens _sometimes_ and that was the mysterial ;)
>
> after a day, we had some logs about the problem. It seems
> that the problem only exist, if MAIL FROM was <>. I remember
> that a new value was added recently to the main.cf:
> smtpd_null_access_lookup_key
> per default, smtpd_null_access_lookup_key is not set
> (postconf -d smtpd_null_access_lookup_key). After setting
> it to <> and reloaded postfix: problem was gone!
>
> So we started smtpd with -v:
>
> BEFORE:
> Feb 1 09:57:16 firewall postfix/smtpd[19755]: generic_checks:
> name=check_sender_access
> Feb 1 09:57:16 firewall postfix/smtpd[19755]: check_access:
> Feb 1 09:57:16 firewall postfix/smtpd[19755]: fatal: error reading
> /etc/postfix/sender_access.db: Invalid argument
> Feb 1 09:57:17 firewall postfix/cleanup[19781]: warning: premature end-of-input
> from cleanup socket while reading input attribute name
>
> so smtpd dies...
>
> AFTER:
> Feb 1 10:00:33 firewall postfix/smtpd[19883]: check_access: <>
> Feb 1 10:00:33 firewall postfix/smtpd[19883]: generic_checks:
> name=check_sender_access status=0
> Feb 1 10:00:33 firewall postfix/smtpd[19883]: generic_checks:
> name=permit_mynetworks
> ...
> and so on...
>
> as you can see, now it checks for <> instead of nothing.
>
> and all works fine.
> so, it seems that here is the bug hidden :)
> now, someone with more knowledge in coding should take a look
> into the sourcecode and find it ;)
>
> i hope, that helps you all and someone can fix the problem :)
>
>
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