Проверка почтового сервера

-> Connect to ssl://smtp.mail.ru:465
220 smtp.mail.ru ESMTP ready (Looking for Mail for your domain? Visit https://biz.mail.ru)
-> EHLO uptimebot.ru
250-smtp.mail.ru
250-SIZE 73400320
250-8BITMIME
250-DSN
250-SMTPUTF8
250 AUTH PLAIN LOGIN XOAUTH2
-> quit
221 2.0.0 Bye

Subject CN: *.mail.ru
SubjectAltName: DNS:*.mail.ru, DNS:mail.ru
Valid from: 2025-10-17 12:12:14
Valid to: 2026-11-18 12:12:13
Issuer CN: GlobalSign RSA OV SSL CA 2018

Subject CN: GlobalSign RSA OV SSL CA 2018
Valid from: 2018-11-21 03:00:00
Valid to: 2028-11-21 03:00:00
Issuer CN: GlobalSign

Subject CN: GlobalSign
Valid from: 2009-03-18 13:00:00
Valid to: 2029-03-18 13:00:00
Issuer CN: GlobalSign