Проверка почтового сервера

-> Connect to 45.9.26.48:25
220 mx.stc-groups.ru Microsoft ESMTP MAIL Service ready at Sun, 31 Aug 2025 20:22:02 +0300
-> EHLO uptimebot.ru
250-mx.stc-groups.ru Hello [93.157.173.90]
250-SIZE 37748736
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-STARTTLS
250-X-ANONYMOUSTLS
250-X-EXPS NTLM
250-8BITMIME
250-BINARYMIME
250-CHUNKING
250-XEXCH50
250-SMTPUTF8
250 XSHADOW
### STARTTLS found ###
-> STARTTLS
### STARTTLS started ok ###
-> EHLO uptimebot.ru
250-mx.stc-groups.ru Hello [93.157.173.90]
250-SIZE 37748736
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-X-EXPS NTLM
250-8BITMIME
250-BINARYMIME
250-CHUNKING
250-XEXCH50
250-SMTPUTF8
250 XSHADOW
-> quit
221 2.0.0 Service closing transmission channel

Subject CN: mx.stc-groups.ru
SubjectAltName: DNS:mx.stc-groups.ru, DNS:mx1.stc-groups.ru, DNS:mx2.stc-groups.ru, DNS:mx.exc.stc-groups.ru, DNS:mx1.exc.stc-groups.ru, DNS:mx2.exc.stc-groups.ru
Valid from: 2021-12-09 16:47:45
Valid to: 2026-12-08 16:47:45
Issuer CN: STCGROUPS-SubCA

Subject CN: STCGROUPS-SubCA
Valid from: 2021-10-21 16:56:50
Valid to: 2041-10-21 15:38:07
Issuer CN: STCGROUPS-RootCA