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Sendmail, Smail, and private networks



Ok.  I know Redhat usually has people install Sendmail as the default
SMTP.  Debian goes with Smail.  Supposedly Smail is easier to configure
and use, and it's supposedly more appropriate for small networks.
(Right now, I have it installed to handle my local network mail.)  And
doesn't sendmail come out with some security problem at least once a
week?  Does anyone have any opinions about which SMTP software to
choose?  Any opinions on "qmail"?

Now, I'm dialing up with PPP to my ISP, and I'm probably getting a
machine name of dial-upXXX.soncom.com.  My local private domain is not
published to the net "icewall.org".  However, the default config for
smail is to make my "visible_server" as "wookimus.icewall.org".  Isn't
this type of config going to cause problems with receiving SMTP servers?
Do I need a visible_server name?  If so, what should I use?  I'm really
confused about this stuff and the HOWTOs don't help.

Eric, thanks for your reply, but can I have an SMTP server w/o having a
registered domain name?

Chewie