"Fernando" == Fernando Shayani <fernando_shayani@yahoo.com.br> writes: Fernando> How can I disable the sendmail option EXPN and VRFY in Fernando> woody? Witch file should I edit? I could not find Fernando> /etc/sendmail.cf. A default woody installation will give you exim as your MTA, not sendmail. The file is /etc/exim/exim.conf. By default, EXPN and VRFY are turned off. Are you sure your installation is different. Cheers! Shyamal