Re: warning: unknown[137.xxx.xxx.253]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

2022-06-06 Thread Wietse Venema
Jim Garrison: > On 6/6/2022 3:13 AM, Jaroslaw Rafa wrote: > > Dnia 5.06.2022 o godz. 23:29:05 julio covolato pisze: > >> > >> I would like to know why these messages appear in the mail.log, > >> I know that "UGFzc3dvcmQ6" is base64 encoded for "Password:". > >> Is this some misconfigured internet

Re: warning: unknown[137.xxx.xxx.253]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

2022-06-06 Thread Jim Garrison
On 6/6/2022 3:13 AM, Jaroslaw Rafa wrote: Dnia 5.06.2022 o godz. 23:29:05 julio covolato pisze: I would like to know why these messages appear in the mail.log, I know that "UGFzc3dvcmQ6" is base64 encoded for "Password:". Is this some misconfigured internet mail server system (Windows)? Rath

Re: warning: unknown[137.xxx.xxx.253]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

2022-06-06 Thread Jaroslaw Rafa
Dnia 5.06.2022 o godz. 23:29:05 julio covolato pisze: > > I would like to know why these messages appear in the mail.log, > I know that "UGFzc3dvcmQ6" is base64 encoded for "Password:". > Is this some misconfigured internet mail server system (Windows)? Rather not a misconfigured server, but som

warning: unknown[137.xxx.xxx.253]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

2022-06-05 Thread julio covolato
Hi. I would like to know why these messages appear in the mail.log, I know that "UGFzc3dvcmQ6" is base64 encoded for "Password:". Is this some misconfigured internet mail server system (Windows)? Blocking these IPs with fail2ban is a good idea? JunĀ  5 23:25:08 saturn postfix/smtps/smtpd[11831]: