On Wed, Aug 02, 2017 at 12:10:31PM +0530, hyndavirap...@bel.co.in wrote: > " Aug 2 11:21:34 AHQ postfix/smtp[6372]: BEC5D67928BD: > to=<cdr.1cor...@1corphq.tcs.mil.in>, orig_to=<cdr.1cor...@tcs.mil.in>, > relay=201.123.1.4[201.123.1.4]:25, delay=0.06, delays=0.04/0.01/0.01/0, > dsn=4.7.5, status=deferred (Server certificate not verified) "
That's nice, but where's the SMTP client's TLS logging? > queue_run_delay = 30s Unrelated, but surely too short. > smtp_enforce_tls = yes Obsolete, instead set "smtp_tls_security_level = encrypt". > smtp_tls_CAfile = /etc/new_pki/tls/certs/ca-bundle.crt This has to be sufficient to verify the remote server's certificate. > smtp_tls_policy_maps = hash:/etc/postfix/tls_policy > smtpd_tls_loglevel = 2 Change that to 1, and also set: smtp_tls_security_level = 1 > tls_policy file is as follows > > [201.123.1.4]:25 secure match=1CorpHQ > > "1CorpHQ" is exactly same as the CN field of the certificate Are there any DNS subject alternative names in the certificate? Is it issued by a trusted CA? ... > How to solve the above error...I'm stuck at this point for a long time... > Any help will be appreciated greatly... Post TLS logging, after setting the loglevel = 1. -- Viktor.