Before switching to EFa I used to use postgrey and they have a default list containing big senders with big pools so the chance of getting the same mail client after it has been greylisted is slim so by default greylisting is turned off.
check out their defautl whitelist: http://postgrey.schweikert.ch/pub/
download the tgz and look into postgrey_whitelist_clients
[SOLVED Is it useful to whitelist email clients with big pools from greylisting?
[SOLVED Is it useful to whitelist email clients with big pools from greylisting?
Last edited by ovizii on 11 May 2016 14:44, edited 1 time in total.
Re: Is it useful to whitelist email clients with big pools from greylisting?
Answered my own question as this is already done in: /etc/sqlgrey/clients_fqdn_whitelist