[exim] tls_try_verify_hosts vs. tls_verify_hosts

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Auteur: Mario Lipinski
Datum:  
Aan: exim-users
Onderwerp: [exim] tls_try_verify_hosts vs. tls_verify_hosts
Hello exim-users,

I am trying to setup a smtp transport that should verify whether the
remote host presented a valid SSL certificate for the MX record of $domain.

When I set "tls_verify_hosts = *" and some other options this seems to
work well. "CV=yes" is logged and $tls_out_certificate_verified is set
to 1.
However, if I replace "tls_verify_hosts = *" with ""tls_try_verify_hosts
= *", "CV=no" is logged and $tls_out_certificate_verified is unset. It
seems that no certificate validation is performed. However, the
connections seems fine and $tls_out_peerdn looks good.
The test case was exactly the same.

I would prefer running tls_try_verify_hosts for some time and just have
some logging about the failed verification before switching to rejecting
connections (tls_verify_hosts). I assumed that tls_try_verify_hosts
should work exactly this way and consider this a bug.

Mario

--
Mit freundlichen Grüßen,
Mario Lipinski

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