Проверка почтового сервера

-> Connect to iset-ek.ru:25
220 mail.genum.ru
-> EHLO uptimebot.ru
250-mail.genum.ru
250-PIPELINING
250-SIZE 104857600
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-mail.genum.ru
250-PIPELINING
250-SIZE 104857600
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: *.genum.ru
SubjectAltName: DNS:*.genum.ru, DNS:genum.ru
Valid from: 2025-05-14 16:18:18
Valid to: 2026-06-15 16:18:17
Issuer CN: GlobalSign GCC R6 AlphaSSL CA 2023

Subject CN: GlobalSign GCC R6 AlphaSSL CA 2023
Valid from: 2023-07-19 06:43:25
Valid to: 2026-07-19 03:00:00
Issuer CN: GlobalSign

Subject CN: GlobalSign
Valid from: 2014-12-10 03:00:00
Valid to: 2034-12-10 03:00:00
Issuer CN: GlobalSign