This list is great !
Last week, I asked the following question :
How is it possible to use a Sun as intelligent mail router, i.e. how can a Sun use both
NIS and DNS to resolve mail adresses. The answer is (mainly from to Dan Kegel
(dank@blacks.jpl.nasa.gov) and works at least on a 3/110 with 4.1.1 :
1. Use sun-delivered /usr/lib/sendmail.mx as /usr/lib/sendmail
2. Use sun-delivered /usr/lib/sendmail.main.cf as /etc/sendmail.cf, and edit it :
3. Insert definitions for the w (hostname), j (fully qualified internet hostname)
and m (domain name) macro at the beginning, if you are not happy with what it
finds itself. I'm not, because our NIS domain name has nothing in common with
our internet subdomain name.
4. To enable DNS : disable the "Pass other valid names up the ladder to our forwarder"
entry in ruleset zero, and "Replace following with above to only forward "known"
top-level domains", too, and enable the "if you are on the DDN ..." entry.
5. To enable NIS name resolving, there were several suggestions :
- don't use NIS for host names
- add dummy DNS entries for the hosts you need, even if in other domains
- use a mayor sendmail.cf hack
I chose the last one, because the first is impractical and teh second is unethical.
You have to :
- define a new macro, e.g. Y, by DYhosts.byname at the beginning of sendmail.cf
- instead of connecting to NIS hosts with the given
R$*<@$%y>$* $#ether $@$2 $:$1<@$2>$3 user@etherhost
introduce
R$*<@$%Y>$* $@$>28$1<@$2>
thus calling a new ruleset, numbered 28. This is defined with
S28
R$*<@$*> $:$1<@${Y$2$}> # u<@host> => u<@a.b.c.d host>
R$*<@$-.$-.$-.$-$*> $:$1<@[$2.$3.$4.$5]> # u<@a.b.c.d> => u<@[a.b.c.d]>
R$* $@$>0$1 # and S0 will deliver it.
and resolves NIS hosts to their Internet numbers.
6. If you feel the need for that, you could add routing information. I added
R$*<@$*.bitnet> $#ether $@VM.GO.DLR.DE $:$1<@$2>
to forward bitnet mail to a bitnet node.
Thanks to all who responded.
/|
/ | Eckhard R"uggeberg
/ | DLR G"ottingen
_____/___|_____ Abt. SM-TS
/ / / / Bunsenstr. 10
/ / / /
/____/____/____/ 3400 G"ottingen / Germany
| /
| / Tel. : 0551/709-2429
| / Fax : 0551/709-2446
|/ E-Mail : Eckhard.Rueggeberg@ts.go.dlr.de
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:06:36 CDT