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Slow delivery on e-mails

K

kaizer

Guest
My clients are complaining about delayed delivery on their e-mails, it can take about an hour before the message are delivered to their mailboxes. Any suggestions on how to fix this?

Our server is running Debian 5 with Plesk 10.0.1 (with Qmail mailserver)
 
double check if you have enabled greylisting, this can cause severe delay in delivery (but prevents spam)
 
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