Hello Garrett,
It is very well possible, to use both DNS and /etc/hosts together on your hp-ux box(es).
/etc/mail/service.switch was only used with sendmail 8.7.x. Now, it is there just for backward compatibility. The file used for host lookup is, /etc/nsswitch.conf.
Next to that,
A) is this for one single hp-ux box, or for a small 'forrest';
B) what are the mailing needs for the hp-ux hosts:
a) incomming mail;
b) outgoing destinations:
1) local users
2) central mail system accounts
3) internet accounts
some one suggested to start with a clean slate. Very good idea. make a copy of /etc/mail/* (tar gzip whaterver you prefer). The minimum one needs in /etc/mail/ are sendmail.cf, sendmail.cw and aliases[.*]
Default information can be found down the /usr/newconfig/etc/mail tree.
sendmail.cw; should contain hostname, localhost, Full Qualified Domain Name (FQDN)
localhost
myserver
myserver.mydomain.com
sendmail.cf; gen_cf yourself a fresh one.
make a few changes using your favourite editor:
DSsmtpserver.mydomain.com
DS will make sure, that if this host cannot resolve the destination host, it will pass the message on to smtpserver, who will (we trust) be able to deliver the message, or pass it on.
perhaps you want to hide your local host(s). use masquerading for that:
DMmydomain.com
Something else to consider with regards to masquerading, when sending to the internet, a lot of companies have configured their incomming mail gateways, to do a so-called reverse lookup. They want to make sure the sending system can be reached, if the mail turnsout to be undeliverable. So, your return address must be valid, since it will be checked (most of the times). This means myserver.mydomain.com must be resolvable from the internet, if you do not masquerade. If you decide to masquerade, please think ahead, so that mail from me@myserver.mydomain.com will be transformed to me@mydomain.com. If someone replies to that, it would be nice that 'me' would receive this reply. If me@mydomain.com does not exist, but the person does have another account on the main mailserver: my.full.name@mydomain.com, you better translate this when sending a message on the hp-ux box, so the message can be replied to. Since this is a next step, I would like to wait with explaining this until you can send where you want.
the line in /etc/nsswitch.conf should read something like:
hosts: files dns
the place where dns is put, is irrelevant. HP's implementation of sendmail, will attempt to resolve using DNS first, no matter where it is mentioned in the hosts line. There are samples for nsswitch.conf in /etc, /etc/nsswitch.*
With these settings, you should be able to get going. If mail is refused/queued, please share the entries from /var/adm/syslog/mail.log, as well as what mailer you use. (I find it odd, that UUCP was attempted..)
Hope this helps
Kasper
HP sendmail, OpenMail, OVO-u support engineer
It depends
