> -----Original Message----- > From: William John Murray [SMTP:w.murray@xxxxxxxx] > Sent: Sunday, March 06, 2005 10:25 PM > To: Fedora-List > Subject: FC3 sendmail help? > > Hello there, > Can anyone help with a sendmail query? > I run a tiny home network on a DHCP ADSL link. I want to send system > mail to an external email server. I cannot just sendmail - it is > rejected as probably spam, so I need to user their ssl-protected > authenticated smtp relay. > Can anyone help configuring sendmail for this? All my googling yields > results which assume the ssl is for my sendmail service, not its > authentication. I can send email via evolution/thunderbird fine, so > it is frustrating not to be able to send root email automatically. > > My best attempt (which probably has no ssl enabled) yields errors like: > > Mar 6 22:11:34 base sendmail[13523]: j26KMbkD012891: > to=<w.murray@xxxxxxxx>, ctladdr=<root@MY-HOME-DOMAIN> (0/0), > delay=01:48:53, xdelay=00:00:00, mailer=relay, pri=802987, > relay=XXXXXX.rl.ac.uk., dsn=4.0.0, stat=Deferred: Name server: > XXXXXX.rl.ac.uk.: host name lookup failure > This looks to me as if the hostname that sendmail is reporting when it connects to another host is not it's "real" - i.e. Internet registered - host name. you could try enabling the following line in sendmail.mc define(`SMART_HOST',`smtp.your.provider') This should pass all external emails through to your ISP's mail host for delivery. They may accept the connection based solely on your email address. If that doesn't work, you'll need to enable the "MASQUERADE_DOMAIN" option to replace your Internal domain name with your Internet legal external domain name. Don't forget to run `make -C /etc/mail' to rebuild the sendmail.cf, and `service sendmail restart' to ensure that the new version is used. Disclaimer This email is confidential and intended solely for the use of the individual to whom it is addressed. Any views or opinions presented are solely those of the author and do not necessarily represent those of A.F. Blakemore and Son Limited. If you are not the intended recipient, be advised that you have received this email in error and that any use, dissemination, forwarding, printing or copying of this email is strictly prohibited. If you have received this email in error please notify the email administrator at A.F. Blakemore and Son Limited, Long Acres Industrial Estate, Rose Hill, Willenhall, West Midlands. WV13 2JP (mailto:postmaster@xxxxxxxxxxxxxxx)