How to get mail to local destinations delivered?

[Timothy Murphy]

Chris G wrote:

>>>>> sendmail knows that *local* mail is delivered to the mail spool.
>>>>> In fact I have found that sendmail thinks this system is called
>>>>> isbd.net and thus mail sent to chris at isbd.net gets put into the file
>>>>> /var/mail/chris by sendmail.

I haven't followed all this thread,
but have you ever posted your sendmail.mc
(deleting lines starting in dnl)?