yum install qgreylist

Yes, I'm aware of that But, if you have 2-6 servers where do you keep the greylisting ips? If an email is "rejected" at server 1 first, then server 5, then server 3.. then it will take along time before it is delivered. Therefore I wondered if there are a good soloution for that?

rsync, gfs, nfs, etc would all do it. Its never been an issue with any of my customers

I think we will try rsync first.

Do you think it will work to run this on every greylisting server:

// -p, --perms preserve permissions
// -g, --group preserve group
// -o, --owner preserve owner (root only)
// -u, --update update only (don't overwrite newer files)
// -t, --times preserve times
rsync -pgout

or anyone with a better solution?

How often would you recommend to run it?

rsync -av -e ssh <src> <dst>

Is there a procedure that covers how to disable sending these messages? I'm no longer going to tip-toe around this problem. I'm willing to eliminate this spam backscatter by any means.

I'm running an ASL/Plesk/Qmail box, and figure if someone is hyper-concerned about an e-mail being received people just need to learn to type the correct e-mail address.

I want to stop the failure notices completely.

Thanks a bundle.

Sorry for the ancient thread resurrection, but this continues to be a problem.