## fake hostname raider [root@raider mail]# hostname raider [root@raider mail]# rpm -qa |grep sendmail sendmail-8.13.4-2 sendmail-cf-8.13.4-2 [root@raider mail]# diff sendmail.mc sendmail.mc.orig 22c22 < define(`SMART_HOST',`smtp.unimacq.edu.au') --- > dnl define(`SMART_HOST',`smtp.your.provider') 156c156 < MASQUERADE_AS(`unimacq.edu.au')dnl --- > dnl MASQUERADE_AS(`mydomain.com')dnl 160c160 < FEATURE(masquerade_envelope)dnl --- > dnl FEATURE(masquerade_envelope)dnl 164c164 < FEATURE(masquerade_entire_domain)dnl --- > dnl FEATURE(masquerade_entire_domain)dnl 166,168c166,168 < MASQUERADE_DOMAIN(localhost)dnl < MASQUERADE_DOMAIN(localhost.localdomain)dnl < MASQUERADE_DOMAIN(unimacq.edu.au)dnl --- > dnl MASQUERADE_DOMAIN(localhost)dnl > dnl MASQUERADE_DOMAIN(localhost.localdomain)dnl > dnl MASQUERADE_DOMAIN(mydomainalias.com)dnl [root@raider mail]# make [root@raider mail]# /etc/rc.d/init.d/sendmail restart ## real hostname igloo.its.unimacq.edu.au [root@raider mail]# cat ~terrence/.muttrc set hostname="igloo.its.unimacq.edu.au" ... |