Проверка почтового сервера

-> Connect to ffteam.org:25
220 ffteam.org ESMTP Postfix (Debian/GNU)
-> EHLO uptimebot.ru
250-ffteam.org
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-SMTPUTF8
250 CHUNKING
### STARTTLS found ###
-> STARTTLS
### STARTTLS started ok ###
-> EHLO uptimebot.ru
250-ffteam.org
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-SMTPUTF8
250 CHUNKING
-> quit
221 2.0.0 Bye

Subject CN: jabber
SubjectAltName: DNS:jabber
Valid from: 2023-12-05 16:52:42
Valid to: 2033-12-02 16:52:42
Issuer CN: jabber