On Thu, Jun 18, 2015, Christian Weisgerber wrote: > sendmail TLS/DH Interoperability Improvement > https://www.freebsd.org/security/advisories/FreeBSD-EN-15:08.sendmail.asc
AFAIK that advisory is being revised... Simply use '2' or your own dhparams (the latter is preferred). A new sendmail snapshot with a different solution for this problem will be available soon.
