Проверка почтового сервера

-> Connect to mail2.acl174.ru:25
220 mail2.acl174.ru ESMTP Postfix (Debian/GNU)
-> EHLO uptimebot.ru
250-mail2.acl174.ru
250-PIPELINING
250-SIZE 73400320
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-SMTPUTF8
250 CHUNKING
### STARTTLS found ###
-> STARTTLS
### STARTTLS started ok ###
-> EHLO uptimebot.ru
250-mail2.acl174.ru
250-PIPELINING
250-SIZE 73400320
250-VRFY
250-ETRN
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-SMTPUTF8
250 CHUNKING
-> quit
221 2.0.0 Bye

Subject CN: R11
Valid from: 2024-03-13 03:00:00
Valid to: 2027-03-13 02:59:59
Issuer CN: ISRG Root X1