On 08/18/2010 09:08 PM, JD wrote: > On 08/18/2010 04:20 PM, Patrick O'Callaghan wrote: >> On Wed, 2010-08-18 at 15:52 -0700, JD wrote: >>> Thanks to all who made important suggestions. >>> It now works. >> Adding SOLVED to the Subject kind of implies that you'll explain *how* >> it was solved. That's the point. >> >> poc >> > Well, it was not just one thing, but of all the tweaks I had to do, > only one turned out to be cruicial: > I had to comment out one line in sendmail.mc: > > cd /etc/mail > > edit sendmail.mc > > DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl > > i.e. add dnl to the start of the line, and that comments it out: > > dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl You did read the comment just before this line, right? > dnl # > dnl # The following causes sendmail to only listen on the IPv4 loopback address > dnl # 127.0.0.1 and not on any other network devices. Remove the loopback > dnl # address restriction to accept email from the internet or intranet. > dnl # > DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl The result is that if you were running sendmail with this in place, even if your router *was* sending you packets to port 25, sendmail wouldn't be listening for them on any device other than the loopback. You must have some other DAEMONS_OPTIONS line uncommented in order for it to listen to some port somewhere.... For years, RedHat has shipped sendmail with this line in place, and for years, I have gone in and edited it to remove the "Addr=127.0.0.1" portion so I could receive email from the Internet. > The minor changes are the common sense things that most mail admins know: > > In sendmail.mc: > > MASQUERADE_AS(`the.domain.name.that.resolves.to.your.router's.public.ip.address')dnl > > You obtain one of these for free from dyndns.com > > Uncomment the line > > FEATURE(masquerade_envelope)dnl (i.e. remove the leading # sign and > leading dnl) > > Uncomment the line > > FEATURE(masquerade_entire_domain)dnl I also have a dynamic IP address (mine's from RCN, not AT&T though) and I do not need to masquerade anything in order for sendmail to receive email properly. But, I *do* have dyndns publish MX records for my domains so that other mailers know where to send the emails to. But, because RCN blocks port 25 *outgoing*, I have to send my email out though RCN's email server using: define(`SMART_HOST',`[smtp.mail.rcn.net]') Other than that, sendmail works as shipped. I have added a few milters to my configuration, and recently picked up an IPv6 address from tunnelbroker.net, and proved that I can receive email via the IPv6 tunnel as well by adding an MTA-6 listener. > Then > > ./make > > service sendmail restart > > There are other files that need administration, but that is out of the > scope of this. -- Kevin J. Cummings kjchome@xxxxxxx cummings@xxxxxxxxxxxxxxxxxx cummings@xxxxxxxxxxxxxxxxxxxxxxx Registered Linux User #1232 (http://counter.li.org) -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
