Created attachment 216907 [details]
Patch against /base/head/etc/sendmail/freebsd.mc
freebsd.mc sets confDH_PARAMETERS to a file parameter, dh.param. This file is not created by /etc/rc.d/sendmail, which just provides rsa keys and certificates to enable a working, minimal sendmail TLS setup. Running default configuration, sendmail complains about nonexistent file.
I'm unsure whether confDH_PARAMETERS should be set at all since DSA keys are not used: maybe telling sendmail to generate 1024-bit length parameters is enough.
Over sendmail maintainer.