Проверка почтового сервера

-> Connect to ssl://mail.concom.pro:465
220 mail.concom.pro Kerio Connect 10.0.6 ESMTP ready
-> EHLO uptimebot.ru
250-mail.concom.pro
250-AUTH CRAM-MD5 PLAIN LOGIN DIGEST-MD5 NTLM
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: 2025-07-15 13:17:50
Valid to: 2026-07-15 13:17:50
Issuer CN: mail.concom.pro