Regarding the CIAC G-09 Bulletin (Sendmail's bug in the vrfy and
expn commands), I have patched the sendmail version of Ultrix v.4.3/4.4
disabling the vrfy and expn commands.
These patched binaries (for MIPS DECstations) are avaiable from:
I don't know if the Ultrix 4.3 and 4.4 versions differ, so I have
Of course these patches are unsuported, I am only offering them
to the community until a better solution comes up.
Centro de Operacoes de Rede,
Instituto para o Desenvolvimento Tecnologico,
Instituto Politecnico do Porto, Porto, Portugal.
o __/ / o _ _
"Don't let your studies interfere with your education..."