On 2024-08-09 17:06, Benny Pedersen via Postfix-users wrote:
Corey H via Postfix-users skrev den 2024-08-09 13:53:
Hello list,
I saw many logs like this in our server log,
Aug 9 19:48:27 mx postfix/submission/smtpd[3731732]: warning:
unknown[5.31.8.57]: SASL LOGIN authentication failed: UGFz
Maybe I can add something useful here:
On most systems there is not only one server running but many more.
I use a combination of blacklists plus an "overall protection". I am really a
friend of
CrowdSec | Curated Threat Intelligence Powered by the Crowd
which serves its purpose very well.
Ma
Corey H via Postfix-users skrev den 2024-08-09 13:53:
Hello list,
I saw many logs like this in our server log,
Aug 9 19:48:27 mx postfix/submission/smtpd[3731732]: warning:
unknown[5.31.8.57]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 9 19:48:27 mx postfix/submission/smtpd[3731732]:
Corey H via Postfix-users:
> Hello list,
>
> I saw many logs like this in our server log,
>
> Aug 9 19:48:27 mx postfix/submission/smtpd[3731732]: warning:
> unknown[5.31.8.57]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
> Aug 9 19:48:27 mx postfix/submission/smtpd[3731732]: too many error
