Проверка почтового сервера

-> Connect to mail.concom.pro:25
220 mail.concom.pro Kerio Connect 10.0.6 ESMTP ready
-> EHLO uptimebot.ru
250-mail.concom.pro
250-AUTH PLAIN LOGIN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-PIPELINING
250-ETRN
250-DSN
250 HELP
### STARTTLS found ###
-> STARTTLS
### STARTTLS started ok ###
-> EHLO uptimebot.ru
250-mail.concom.pro
250-AUTH PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-PIPELINING
250-ETRN
250-DSN
250 HELP
-> quit
221 2.0.0 SMTP closing connection

Subject CN: mail.concom.pro
SubjectAltName: DNS:mail.concom.pro
Valid from: 2025-07-08 09:22:44
Valid to: 2026-08-09 09:22:43
Issuer CN: GlobalSign GCC R6 AlphaSSL CA 2025

Subject CN: GlobalSign GCC R6 AlphaSSL CA 2025
Valid from: 2025-05-21 05:36:52
Valid to: 2027-05-21 03:00:00
Issuer CN: GlobalSign