How To Fix postfix delayed mail delivery

Date posted : 31/05/2019

In this article, we’re going to explain about resolving the delayed mail deliveries.

Postfix is a free and open-source mail transfer agent (MTA) that routes and delivers electronic mail.

For instance, we’ve faced issues where mails from our server to gmail was received successfully. However mails to any other domains received after an hour delay.

Its because there is no value set for slow_destination_rate_delay in postfix configuration. So we need to set it as 1s in file


Edit /etc/postfix/ and add below line

slow_destination_rate_delay = 1s

Save the file and restart postfix

/etc/init.d/postfix restart

Now you should be able to receive mails immediately.

If you are recieving mails at spambox, please make sure that you have proper SPF and rDNS records are setup for your source server.

Thanks for using pheonix solutions.

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