sendmail, the resolver and /etc/hosts

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3 total messages Started by Greg Woods Mon, 19 Sep 1988 16:44

#2829

Author: Greg Woods
Date: Mon, 19 Sep 1988 16:44

16 lines
1211 bytes

I want to modify sendmail to check the /etc/hosts file if a host name lookup
to the name server fails with a non-temporary error. 

1) Has anyone done this already, before I go and reinvent the wheel? 
2) I'm running a version of 5.58 hacked to work on a Sun-4. Does anyone know
   if vanilla 5.59 from Beserkeley will run on a Sun-4? Under SunOS4-3.2 or
   Sun OS 4.0? What does 5.59 buy me over 5.58? Is it worth the hassle
   to try and convert? These are related issues, because if I'm going to
   go in and hack the source, I'd just as soon start with the most up-to-date
   version that I can get to work without an excessive amount of work.

--Greg

P.S. If it matters, I'm running BIND 4.8 on a Sun-4/280, currently under
SunOS4-3.2 but soon to be upgraded to Sun OS4.0. This machine does not
run yellow pages.

Re: sendmail, the resolver and /etc/hosts

#2822

Author: Usenet file owner
Date: Fri, 23 Sep 1988 20:55

30 lines
2218 bytes

In article <287@hal.UUCP>, ane@hal.UUCP (Aydin Edguer) writes:
>In article <733@ncar.ucar.edu> woods@handies.UCAR.EDU (Greg Woods) writes:
> (...)
>>All they know is that they can FTP there but they can't mail there,
>>and in their eyes it is my fault, since I'm in charge of mail.
>[note: this should never happen on your machine since ftp uses
> the nameserver too!  Unless your running with improperly compiled
> programs.]

  There are still a few sites out there (like this one) which don't
have software for full nameserver support.  We're running SunOS 3.5
(yes, we should upgrade to 4.0, but convincing everyone of this,
especially when their software would break, is hard).  We have a
patched version of sendmail that uses the name server; nothing else
does yet.  So we have the same problem, at least until we convert over
to 4.0 (just when is management's decision).
  So sometimes we need workarounds for these sorts of things.
Convincing people around here to upgrade is hard (some machines are
still running 2.x!!!).  I agree that looking in /etc/hosts could slow
down the conversion process (to nameservers); however, we aren't
really going there right now anyway.

					Anton Rang
DISCLAIMER: All opinions and mistakes are either my own, or those of
	    an alien which has taken over my mind (who knows which?).

+---------------------------------------------------+
| Anton Rang (grad student)	   | "VMS forever!" |
| Michigan State University	   |		    |
+---------------------------------------------------+

Re: sendmail, the resolver and /etc/hosts

#2824

Author: Jon A. Tankersley
Date: Tue, 27 Sep 1988 21:49

11 lines
1238 bytes

Has anyone successfully gotten Sun named or BIND to work to set up a root-less
network?  I am trying to set up named/BIND for a network that has no ARPA
connections.  Is this possible?  I need to spoof named/BIND on an internal
network.  I am going to be following as closely as possible the established
configuration for the name server, but we may never get a connection to the
ARPA net.  If we do, then I shouldn't need to do a lot of extra work to 
connect.

-tank-
-- 
#include <disclaimer.h>		/* nobody knows the trouble I .... */

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