Проверка почтового сервера

-> Connect to lampakb.ru:25
220 toomail.ru ESMTP Postfix (Debian/GNU)
-> EHLO uptimebot.ru
250-toomail.ru
250-PIPELINING
250-SIZE
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-toomail.ru
250-PIPELINING
250-SIZE
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-SMTPUTF8
250 CHUNKING
-> quit
221 2.0.0 Bye

Subject CN: toomail.ru
SubjectAltName: DNS:toomail.ru
Valid from: 2020-06-09 20:18:13
Valid to: 2030-06-07 20:18:13
Issuer CN: toomail.ru