I hope it's in the right place: /usr/sbin
ll sen*
lrwxrwxrwx 1 root root 21 Jul 18 16:43 sendmail -> /etc/alternatives/mta
-rwxr-sr-x 1 root smmsp 3750315 Aug 26 13:58 sendmail.sendmail
But sendmail is a link to a link to a sendmail.sendmail (i haven't renamed it, I use up2date from redhat and nothing else)
ll /etc/alternatives/mta
lrwxrwxrwx 1 root root 27 Sep 1 09:14 /etc/alternatives/mta -> /usr/sbin/sendmail.sendmail
maybe could be some isue with permissions? but then ¿why mail() answers ok?
And i suggest: ¿will this problem something to have with safe_mode?
... From now on I'll try to answer some questions as you are doing with me.
Thanks