I gave the user email address priority over the "Use email from" option, that
means only if the user does not have an email address, then the "Use email from"
value is used. Now I realize that the priority is maybe wrong, so I should give
the "use email from" switch the highest priority. Only if this flag is not
present, then the system uses the user's email address. If that one is not
present, too, then the system uses "elog@<host>".

I applied this change to the CVS version, so let me know if it is ok with you.