On Mon, 2005-05-09 at 19:22 -0500, Gregory P. Ennis wrote: > Everyone, > > Thought I could solve this problem, but Looks like I need some help. > > I am trying to replace our R.H 8.0 internal e-mail server with a faster > machine using FC3. I set a FC3 unit up as a desktop PC in order to do > the setup and testing before I put it into production. > > I have set up other machines using sendmail with only the usual > problems, but this one has me stumped. The internal mail server > 'mailin.domain.com' needs to pass its e-mail to our external server > 'mailout.domain.com' while at the same time processing mailin needs to > process local mail. > > define(`SMART_HOST',`mailp.pomec.net')dnl > > The HUB feature was commented because I want it to process some local > mail > dnl define(`MAIL_HUB', `mailp.pomec.com')dnl > > Both of the below are commented out > > dnl FEATURE(`accept_unresolvable_domains')dnl > dnl # > dnl FEATURE(`relay_based_on_MX')dnl > > > I was using the mail coomand in the form of > > mail -s 'test trasnmissions to mailout' Name@xxxxxxxxxxx < ./textfile > > The maillog on mailin demonstrate that mailout refused the connection. > > I checked my host, host.allow files, turned off iptables on both units, > and still no solution. > > I decided to watch what was happening using ethereal, and found that > sendmail was doing a dns lookup for domain.com and found the internet IP > address for mailout.domain.com. Of course when sendmail uses this > address it fails a connection which is related to our firewall. > > I tried using the internal IP address with 'telnet mailout.domain.com > 25' and it connects easily. 'telnet "external IP address" 25' does not > connect and this is what sendmail is doing. > > I tried changing the name of of mailout.domain.com in the host file of > mailin to something like mailoutp.domain.com but sendmail continues to > do DNS searches on 'domain.com' giving it the external IP address that > fails. > > I need sendmail on the new mailin server to stop doing dns searches for > the IP address and just use the host file for the internal IP address. > I think that would solve this problem. > > I am sure there is a simple solution, but so far I can not find it. > Your help would sure be appreciated. You might be better off taking a different approach. Try specifying the name of the smart host inside square brackets, which turns off MX lookups for the name: If mailp.pomec.net resolves only to the internal IP address: define(`SMART_HOST',`[mailp.pomec.net]')dnl Otherwise: define(`SMART_HOST',`[mailout.internal.ip.addr]')dnl Paul. -- Paul Howarth <paul@xxxxxxxxxxxx>
