24 Aug
2016
24 Aug
'16
3:08 p.m.
On 8/23/2016 11:57 AM, Sam <sr42354@gmail.com> wrote:
The problem is that the sender of the spam as something like voicemail@ourdomain.fr ( the user voicemail doesn't exist in our database )
And sometimes dovecot create the directory and store the reply 's mail...
Don't accept mail for non-existent (invalid) users
Don't accept mail from domains that you control that don't originate from your smtp server(s)
Problem solved.