23 Sep
2019
23 Sep
'19
11:13 a.m.
On 23/09/2019 07:29, Plutocrat via dovecot wrote:
This is probably quite an easy question, but I haven't been able to find the answer. I'm running a server where all the email addresses are in the format "user@domain.com". I've noticed that a large number of fake login attempts use the format "user" eg. reception, service, root, admin.
Is it possible to prevent any such logins to these email users without an @domain.com? Or maybe ignore them. Or drop them from the logging.
It's not directly a solution within dovecot but "fail2ban" exists.
MfG, Bernd
Bernd Petrovitsch Email : bernd@petrovitsch.priv.at LUGA : http://www.luga.at