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Check your nameserver in /etc/resolv.conf, try Google's 8.8.8.8: sudo vi /etc/resolv.conf Change the nameserver IP: nameserver 8.8.8.8 Then restart postfix: sudo /etc/init.d/postfix restart


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Here's what I did: To test my issue, I built a vmware image of debian squeeze and limited the disk IOPS to 40 and memory to 256MB on the machine. I used postfix, dovecot and procmail in the same way I had them set up on my production machine. I created a user account and created large multi-gigabyte files for procmail to write to. I installed nmon and ...



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