Error: Postfix/Greyfix - warning: problem talking to server private/greyfix: No such file or directory

You get the following error in your mail log:

Aug 26 16:20:00 server1 postfix/smtpd[8471]: warning: problem talking to server private/greyfix: No such file or directory

Solution

Open /etc/postfix/master.cf...

vi /etc/postfix/master.cf

... and add the following two lines:

greyfix    unix  -       n       n       -       -       spawn
  user=nobody argv=/usr/local/sbin/greyfix --greylist-delay 60 -/ 24

(Make sure you use the correct path to your greyfix command - you can find that out by running

which greyfix

)

Restart Postfix afterwards:

/etc/init.d/postfix restart