→ MAIL FROM:
← 250 2.1.0 Ok
→ RCPT TO:
← 250 2.1.5 Ok
→ RCPT TO:
← 250 2.1.5 Ok
→ DATA
← 354 End data with .
→ From: [email protected]
To: [email protected]
Cc: [email protected]
Subject: test
message body
.
← 250 2.0.0 Ok: queued as F074F9FB0E
→ QUIT
← 221 2.0.0 Bye
5
TLS証明書の検証
TLS証明書の検証
オレオレ証明書とか期限切れ証明書はエラーにしたい
% openssl s_client -connect smtp.example.com:587 -starttls smtp
-verify_return_error
...
Verification error: certificate has expired
---
New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 10 (certificate has expired)
---
%
15