It's to bad a month has gone by and no answer to this question. It is the same (or pretty close) to the issues I am having.
I don't have a domain, or want one at this time. I would simply like to be able to use the PHP mail() function.
I'm afraid by no answer this can't be done.
I'm getting the following in my /var/log/mail.log file:
Oct 27 23:06:53 G4 sendmail: gethostbyaddr(192.168.0.116) failed: 3
Oct 27 23:06:53 G4 sendmail: g8Q46rcX001015: from=www, size=113, class=0, nrcpts=0, msgid=<2002102772325.g8Q46rcX001015@mulan.nodomain.com>, relay=localhost
I do know 192.168.0.116 is my IP address behind my router. "nodomain.com" is the made up domain name I used in my config.mc file. I'm not getting the third message from the original post. Does this mean I'm not getting as far as griffitts or an I gett farther?
How does one go about actually figuring out what these messages mean? Is it because I don't have a domain? Is there a problem in my sendmail configuration? Is the problem in my very simply PHP mail() reqest.
I looked at the sendmail.org pages and I didn't find a documentation section. (That doesn't mean it isn't there, I just didn't find it.)