postfix logs wirred

aaP_hicmed1825

hi im newbie
i couldnt install fail2ban i keep get error service inactive
so today checking postfix logs i see some strange ips trying to log in
check logs
Dec 16 20:55:33 mail postfix/smtpd[177895]: warning: hostname ig.earacheevince.com does not resolve to address 212.192.246.82 Dec 16 20:55:33 mail postfix/smtpd[177895]: connect from unknown[212.192.246.82] Dec 16 20:55:35 mail postfix/smtpd[177895]: warning: unknown[212.192.246.82]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 Dec 16 20:55:35 mail postfix/smtpd[177895]: disconnect from unknown[212.192.246.82] ehlo=1 auth=0/1 quit=1 commands=2/3 Dec 16 20:56:02 mail postfix/smtpd[177895]: warning: hostname flurry.earacheevince.com does not resolve to address 212.192.246.81 Dec 16 20:56:02 mail postfix/smtpd[177895]: connect from unknown[212.192.246.81] Dec 16 20:56:06 mail postfix/smtpd[177895]: warning: unknown[212.192.246.81]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 Dec 16 20:56:06 mail postfix/smtpd[177895]: disconnect from unknown[212.192.246.81] ehlo=1 auth=0/1 quit=1 commands=2/3

plz advice

aaP_hicmed1825

since i couldn't activate fail2ban manager it give always fail2ban not active
i install it from terminal and config jail.local enabled for ssh, postfix and sasl and devcot
checked again with systemctl statut servive active hope its enough
any other suggestions
thank you

aapanel_power

aaP_hicmed1825 Hello, I read your Fail2ban logs, your postal service should be maliciously scanned by someone, you can protect your postal service in Fail2ban

aaP_hicmed1825

can you help me its look like file2ban manager blow up
i removed it and tried to intall it again via ssh i couldnt
it keep show this error fail2ban.service: Failed with result 'exit-code'
i reinstall it many times with no luck