Проверка почтового сервера

-> Connect to mail.threat.team:25
220 mail.threat.team ESMTP Postfix (Ubuntu)
-> EHLO uptimebot.ru
250-mail.threat.team
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-mail.threat.team
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH PLAIN
250-AUTH=PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-SMTPUTF8
250 CHUNKING
-> quit
221 2.0.0 Bye

Subject CN: threat.team
Valid from: 2025-07-28 16:28:23
Valid to: 2029-07-28 16:28:23
Issuer CN: threat.team