I've never seen this before, perhaps someone can throw light on it ? Postfix 3.3.1
>openssl s_client -connect test.example.com:587 -starttls smtp 250 DSN ehlo localhost 250-test.example.com 250-PIPELINING 250-SIZE 20480000 250-ETRN 250-AUTH PLAIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN AUTH PLAIN NONEOFYOURBUSINESS 235 2.7.0 Authentication successful MAIL FROM:t...@example.com 250 2.1.0 Ok RCPT TO:t...@example.com RENEGOTIATING depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert High Assurance EV Root CA verify return:1 depth=1 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert SHA2 High Assurance Server CA verify return:1 depth=0 C = X, L = X, O = X, CN = *.example.com verify return:1 DATA 554 5.5.1 Error: no valid recipients quit 221 2.0.0 Bye closed
