home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!math.fu-berlin.de!uni-paderborn.de!joost
- From: joost@cadlab.de (Michael Joosten)
- Newsgroups: comp.sys.sgi
- Subject: Re: sendmail on Indigo
- Date: 23 Nov 92 22:42:54
- Organization: CADLAB, Paderborn, FRG
- Lines: 79
- Message-ID: <JOOST.92Nov23224254@ori.cadlab.de>
- References: <shcmfp4@sgi.sgi.com>
- Reply-To: joost@cadlab.de
- NNTP-Posting-Host: ori.cadlab.uni-paderborn.de
- In-reply-to: roberts@nimrod.wpd.sgi.com's message of Wed, 18 Nov 1992 19:53:01 GMT
-
- Ah, just the right thread at the right time. We are running 4.0.2.
-
- In article <shcmfp4@sgi.sgi.com> roberts@nimrod.wpd.sgi.com (Robert Stephens) writes:
-
-
- > Also, when
- > receiving mail my machine always greets the sending machine with
- > something like "HELO machinename.D, why do you call yourself
- > machinename.domainname".
-
- The message implies that your host knows the connecting host by a
- different name than the connecting host knows itself. If you do a
- "/usr/sbin/canonhost machinename" what do you get?
-
- "canonhost" - How does it retrieve the canonical hostname? On our SGIs (in a
- Sun NIS) "canonhost ingold" returns "ingold", or must the full name be first
- in /etc/hosts etc.?
-
- our /etc/hosts: 131.234.80.57 ingold ingold.cadlab.de
-
- Apparently Irix insists that the first name-column has to contain the full
- name. I'm not sure what happens if we change our whole NIS host map in this
- way.....
-
- I don't understand the .D
-
- Ha! I bite. This day I just tracked this problem down. Apparently this occurs
- if your gethostbyaddress() doesn't return the fully qualified hostname of the
- client, as it is in our NIS system (w're mainly Sun-equipped). In this case,
- sendmail tries to build the full name by means of the option 'N', this is in
- daemon.c, function getrequests() (this is at least true for the BSD4.3
- sendmail sources). There the full name is built by appending the value of the
- variable 'NetName' to the hostname as returned by gethostbyaddr(). 'NetName'
- in turn comes from the sendmail option 'N', which is set in the default config
- file to 'ON$D'. But here is a bug: option statements do *not* evaluate macros,
- so when you change it to 'ON<domainname>' this will be (more) correct. After
- having done this, 4.0.2's sendmail now greets me with:
-
- 220 ingold Sendmail 920110.SGI/911001.SGI ready at Mon, 23 Nov 92 21:37:44 +0100
- helo ori.cadlab.de
- 250 Hello ori.cadlab.de, why do you call yourself ori.cadlab.de?
- ^^^^^^^^^^^^ ^^^^^^^^^^^^^ Huh?
-
- This message comes from srvrsmtp.c, somewhere after a 'case CMDHELO'. This
- sort of message doesn't in occur in 4.3 sendmail, only in IDA and 4.2, and
- looking now in IDA I can't see what's wrong there:
-
- if (RealHostName != NULL && strcasecmp(ptr, RealHostName
- ))
- {
- char hostbuf[MAXNAME];
-
- (void) sprintf(hostbuf, "%s (%s)", ptr, RealHost
- Name);
- DeclHostName = newstr(hostbuf);
- message("250", "Hello %s, why do you call yourse
- lf %s?",
- RealHostName, ptr);
- }
-
- Is this in 4.0.2 sendmail different? On the other hand, IDA does not try to
- append the 'N' option to the client's hostname, so I had to look in two
- different sources (and BSD Net2's sendmail also omits the appending of NetName..)
-
- Well, Robert, do you have access to the sources ? Maybe you could explain this
- a bit... 8-)
-
-
- Michael
- --
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- | Michael Joosten | Tel. : (+49) (+) 5251-284 120 |
- | CADLAB | Fax : (+49) (+) 5251-284 140 |
- | Bahnhofstr. 32 | E-Mail: joost@cadlab.de |
- | D-4790 Paderborn | ...!uunet!unido!cadlab!joost |
- | FRG | Mass mail to: joost@pbinfo.uni-paderborn.de |
- |--------------------------------------------------------------------------|
- | CADLAB is a cooperation between Uni-GH Paderborn & SNI AG |
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-