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From: "chem@i-p-d.nl" <chem@i-p-d.nl>
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Date: Wed, 18 Oct 2000 14:59:10 +0200
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Subject: pop before smtp: makemap hangs
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Hi,

We have imlemented pop before smtp-check for sendmail, and I have an increasing 
problem on several of our boxes that the hashing of the popauth.db (every 30 
seconds) keeps hanging after a while. sometimes it will run for hours, 
sometimes not more than 10 minutes. 

I see this in the maillog:
Oct 18 14:51:13 ns9 sendmail[10530]: NOQUEUE: SYSERR(root): Cannot open hash 
database /etc/mail/popauth.db: Inappropriate file type or format

which in my opinion is caused by the hanging of the makemap command.

It started a few weeks ago, and has become severe after I implemented the 
"official" pop-b4-smtp hack from sendmail last week.

The sh-script reads:
!/bin/sh
   cd /var/spool/popauth/
   while `true`
    do
       mv /etc/mail/popauth /etc/mail/popauth-old
       echo > /etc/mail/popauth
       for addr in `ls -1`
       do
          echo "$addr     OK" >> /etc/mail/popauth
       done
       cat /etc/mail/popauth | makemap -r hash /etc/mail/popauth.db < 
/etc/mail/popauth
       sleep 30
    done

And the significant rules (in sendmail.cf) are:
Kpopauth hash -a<OK> /etc/mail/popauth

SLocal_check_rcpt
R$*             $: $(popauth $&{client_addr} $: <?> $)
R<?>            $@ NoPopAuth

R$*<OK>         $# OK

The makemap- and sendmail-binairies are of the same date.

Does anyone have any suggestions what causes this?

TIA

Gina van Zundert
Unix SysAdmin (Spec:DNS-Email-MySQL)
IPD Hosting BV

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