Проверка почтового сервера

-> Connect to Mxs.mail.ru:25
220 mxs.mail.ru ESMTP ready (Looking for Mail for your domain? Visit https://biz.mail.ru)
-> EHLO uptimebot.ru
250-mxs.mail.ru
250-SIZE 73400320
250-8BITMIME
250-DSN
250-SMTPUTF8
250 STARTTLS
### STARTTLS found ###
-> STARTTLS
### STARTTLS started ok ###
-> EHLO uptimebot.ru
250-mxs.mail.ru
250-SIZE 73400320
250-8BITMIME
250-DSN
250 SMTPUTF8
-> quit
221 2.0.0 Bye

Subject CN: *.mail.ru
SubjectAltName: DNS:*.mail.ru, DNS:mail.ru
Valid from: 2024-10-24 16:41:03
Valid to: 2025-11-25 16:41:02
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: 2018-09-19 03:00:00
Valid to: 2028-01-28 15:00:00
Issuer CN: GlobalSign Root CA