I've just installed my first OpenBSD 3.9 box and the first thing I did was set up my binpatch environment. As I explained before, OpenBSD has released a patch for the sendmail vulnerability released March 25, 2006.
So, I've created a binpatch for 3.9.
I described the process for 3.8, so I'll leave out the detail.
My binpatch files are available:
Note that 000sasl_sendmail is an unpatched sendmail that ships with OpenBSD with SASL support built in.