Проверка почтового сервера
-> Connect to mail.mailware.org:25
220 mail.mailware.org ESMTP Postcow
-> EHLO uptimebot.ru
250-mail.mailware.org
250-PIPELINING
250-SIZE 104857600
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
### STARTTLS found ###
-> STARTTLS
### STARTTLS started ok ###
-> EHLO uptimebot.ru
250-mail.mailware.org
250-PIPELINING
250-SIZE 104857600
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
-> quit
221 2.0.0 Bye
Цепочка сертификатов:220 mail.mailware.org ESMTP Postcow
-> EHLO uptimebot.ru
250-mail.mailware.org
250-PIPELINING
250-SIZE 104857600
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
### STARTTLS found ###
-> STARTTLS
### STARTTLS started ok ###
-> EHLO uptimebot.ru
250-mail.mailware.org
250-PIPELINING
250-SIZE 104857600
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
-> quit
221 2.0.0 Bye
Subject CN: mail.mailware.org
SubjectAltName: DNS:autoconfig.1metall.ru, DNS:autoconfig.1polimer.ru, DNS:autoconfig.1truboprovod.ru, DNS:autoconfig.4steel.ru, DNS:autoconfig.bvbmechanics.ru, DNS:autoconfig.cvet-splav.ru, DNS:autoconfig.cvet-steel.ru, DNS:autoconfig.inox-pipe.ru, DNS:autoconfig.izolit-snab.ru, DNS:autoconfig.mailware.org, DNS:autoconfig.metizcity.ru, DNS:autoconfig.nkt-prokat.ru, DNS:autoconfig.oboron-komplekt.ru, DNS:autoconfig.pm-metall.kz, DNS:autoconfig.pm-metall.ru, DNS:autoconfig.polimer-hub.ru, DNS:autoconfig.ppu-trubprom.ru, DNS:autoconfig.pt-star.ru, DNS:autoconfig.snab-steel.kz, DNS:autoconfig.snab-steel.ru, DNS:autoconfig.stalsfera.ru, DNS:autoconfig.steel-opora.ru, DNS:autoconfig.steelcor.kz, DNS:autoconfig.steelcor.ru, DNS:autoconfig.upassist.cloud, DNS:autoconfig.zavod-koval.ru, DNS:autodiscover.1metall.ru, DNS:autodiscover.1polimer.ru, DNS:autodiscover.1truboprovod.ru, DNS:autodiscover.4steel.ru, DNS:autodiscover.bvbmechanics.ru, DNS:autodiscover.cvet-splav.ru, DNS:autodiscover.cvet-steel.ru, DNS:autodiscover.inox-pipe.ru, DNS:autodiscover.izolit-snab.ru, DNS:autodiscover.mailware.org, DNS:autodiscover.metizcity.ru, DNS:autodiscover.nkt-prokat.ru, DNS:autodiscover.oboron-komplekt.ru, DNS:autodiscover.pm-metall.kz, DNS:autodiscover.pm-metall.ru, DNS:autodiscover.polimer-hub.ru, DNS:autodiscover.ppu-trubprom.ru, DNS:autodiscover.pt-star.ru, DNS:autodiscover.snab-steel.kz, DNS:autodiscover.snab-steel.ru, DNS:autodiscover.stalsfera.ru, DNS:autodiscover.steel-opora.ru, DNS:autodiscover.steelcor.kz, DNS:autodiscover.steelcor.ru, DNS:mail.mailware.org
Valid from: 2025-08-29 21:19:30
Valid to: 2025-11-27 21:19:29
Issuer CN: R12
SubjectAltName: DNS:autoconfig.1metall.ru, DNS:autoconfig.1polimer.ru, DNS:autoconfig.1truboprovod.ru, DNS:autoconfig.4steel.ru, DNS:autoconfig.bvbmechanics.ru, DNS:autoconfig.cvet-splav.ru, DNS:autoconfig.cvet-steel.ru, DNS:autoconfig.inox-pipe.ru, DNS:autoconfig.izolit-snab.ru, DNS:autoconfig.mailware.org, DNS:autoconfig.metizcity.ru, DNS:autoconfig.nkt-prokat.ru, DNS:autoconfig.oboron-komplekt.ru, DNS:autoconfig.pm-metall.kz, DNS:autoconfig.pm-metall.ru, DNS:autoconfig.polimer-hub.ru, DNS:autoconfig.ppu-trubprom.ru, DNS:autoconfig.pt-star.ru, DNS:autoconfig.snab-steel.kz, DNS:autoconfig.snab-steel.ru, DNS:autoconfig.stalsfera.ru, DNS:autoconfig.steel-opora.ru, DNS:autoconfig.steelcor.kz, DNS:autoconfig.steelcor.ru, DNS:autoconfig.upassist.cloud, DNS:autoconfig.zavod-koval.ru, DNS:autodiscover.1metall.ru, DNS:autodiscover.1polimer.ru, DNS:autodiscover.1truboprovod.ru, DNS:autodiscover.4steel.ru, DNS:autodiscover.bvbmechanics.ru, DNS:autodiscover.cvet-splav.ru, DNS:autodiscover.cvet-steel.ru, DNS:autodiscover.inox-pipe.ru, DNS:autodiscover.izolit-snab.ru, DNS:autodiscover.mailware.org, DNS:autodiscover.metizcity.ru, DNS:autodiscover.nkt-prokat.ru, DNS:autodiscover.oboron-komplekt.ru, DNS:autodiscover.pm-metall.kz, DNS:autodiscover.pm-metall.ru, DNS:autodiscover.polimer-hub.ru, DNS:autodiscover.ppu-trubprom.ru, DNS:autodiscover.pt-star.ru, DNS:autodiscover.snab-steel.kz, DNS:autodiscover.snab-steel.ru, DNS:autodiscover.stalsfera.ru, DNS:autodiscover.steel-opora.ru, DNS:autodiscover.steelcor.kz, DNS:autodiscover.steelcor.ru, DNS:mail.mailware.org
Valid from: 2025-08-29 21:19:30
Valid to: 2025-11-27 21:19:29
Issuer CN: R12
Subject CN: R12
Valid from: 2024-03-13 03:00:00
Valid to: 2027-03-13 02:59:59
Issuer CN: ISRG Root X1
Valid from: 2024-03-13 03:00:00
Valid to: 2027-03-13 02:59:59
Issuer CN: ISRG Root X1
Спасибо!