🚀 go-pugleaf

I'm running a slightly-modified UK-2.1 on a 4.0.3 Sun 3/280 using the 
provided sendmail (@(#)SendMail version 1.9 of 88/02/08). Everything is
fine and dandy except when somebody gives me an unknown domain, which
causes a segmentation fault:

sun% /usr/lib/sendmail -v nobody@nowhere < /dev/null
nobody@nowhere... Domain Unknown
Segmentation fault
sun%

I vaguely remember somebody mentioning the "OP" stuff in a similar context,
but that doesn't seem to make any difference, in or out. Other than getting
a fixed sendmail, is there any way I can stop this happening?

Thanks in anticipation,

Ian.

{SERC/ECF Sys/Net Support, ian@uk.ac.umist}