DragonFly users List (threaded) for 2006-08
Re: question about sendmail
Saverio Iacovelli wrote:
After the installation, DFly OS have got a active
1) Does it need to configure a DNS server for sending
email with mail client and sendmail?
Sendmail (any MTA) will ordinarily follow the internet 'food chain' to find a DNS.
You need not run one locally, though a properly implemented one may speed-up the
2) Can sendmail works in indipendent way from DNS
An MTA (Exim, anyway... no longer 'current' with sendmail here) can be set up to
do 'local' (on-box) delivery, and 'nearby' private servers such as needed for
chron'ed reports, by relying just on the ~etc/hosts file entries and to the 'net
at large with 'domain literals', ie:
<a validuser>@<some valid IP>
- which may be all you need for LAN or 'private' testing w/o risk of polluting
the 'net, and is the only way to reach boxen that have no published <domain>.<tld>.
A DNS query is not used just for routing outbound, but also for verification of
incoming in a number of places in 'aware' MTA's - Exim especially.
~/etc/rc.conf needs a defaultrouter entry
~/etc/hosts must at least not 'short-circuit' the routing
~/etc/resolv.conf must have a useful way of finding one or more nameservers.
manpages have more detail .....