# 업그레이드 후 이메일 작동 안 함: 인증서 검증 실패

**URL:** https://meta.discourse.org/t/emails-not-working-after-upgrade-certificate-verify-failed/226978
**Category:** Self-hosting
**Created:** [5월 13, 2022, 8:02오후 UTC](https://meta.discourse.org/t/emails-not-working-after-upgrade-certificate-verify-failed/226978 "2022-05-13T20:02:59Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![JammyDodger](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jammydodger/32/254611_2.png) [@JammyDodger](https://meta.discourse.org/u/JammyDodger)
#### Post date: [5월 13, 2022, 8:51오후 UTC](https://meta.discourse.org/t/emails-not-working-after-upgrade-certificate-verify-failed/226978/2 "2022-05-13T20:51:49Z")

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이 최근 주제에서 유사한 오류에 대한 논의와 조언이 있으며 도움이 될 수 있습니다 🤞

> [@이메일 호스트명 인증서 불일치로 인한 Sidekiq 큐 과부하 및 심각한 사이트 불안정](https://meta.discourse.org/t/email-hostname-certificate-mismatch-causing-sidekiq-queue-overload-severe-site-instability/225778/8?u=jammydodger):
>
> When I connect to that host and test the STARTTLS I get a certificate that does not match the hostname: Certificate chain 0 s:/C=US/ST=California/L=Sunnyvale/O=Proofpoint, Inc./OU=ESP/CN=\*.pphosted.com i:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=Thawte RSA CA 2018 1 s:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=Thawte RSA CA 2018 i:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert Global Root CA and it did not expire yet: notBefore=Jun 12 00:00:00 2020 GMT notAfter=Sep 14 12:00:…

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