* Hendrik Boom: > I use greylisting with my postfix. On Debian and Devuan th package is > called 'postgrey'.
Classical, time-based greylisting like Postgrey is problematic in this age of 2FA and other email-based confirmation codes. Besides, Postfix has its own, superior mechanism called "Postscreen" built in. This has recently been discussed once again, in-depth, on the Postfix mailing list, so I suggest interested parties to check the ML archives. -Ralph
