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ZL3AI > APRDIG 14.04.03 11:11l 265 Lines 9051 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Apr 11, 2/3
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: BASIC Stamps
From: "Curt Mills, WE7U" <hacker@tc.fluke.com>
Date: Fri, 11 Apr 2003 14:16:44 -0700 (PDT)
X-Message-Number: 10
On Fri, 11 Apr 2003, Miller Scott Contr 30SCS/FTI wrote:
>As long as we're on this subject, can someone suggest a good C development
>environment for either the PIC or Atmel AVR? I do most of my stuff in C for
>the Motorola HC08 series, and I like the Codewarrior IDE. I've downloaded
>the Atmel development environment, and it looks nice, but it doesn't include
>a Ccompiler. Is there anything good out there, preferably for free? And
>preferably for Windows? I dislike software development on *nix platforms.
AVR-GCC: avrfreaks.net
I use unix avr-gcc myself. Friends are using the Windows flavor.
--
Curt Mills, WE7U hacker_NO_SPAM_@tc.fluke.com
Senior Methods Engineer/SysAdmin
"Lotto: A tax on people who are bad at math!"
"Windows: Microsoft's tax on computer illiterates!" -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
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Subject: Re: BASIC Stamps
From: Jeff King <jeff@aerodata.net>
Date: Fri, 11 Apr 2003 16:55:22 -0500 (CDT)
X-Message-Number: 11
Interesting, CCS 'C" PCM on a 16C621 at 4mhz bit banging serial had no
problem keeping up with 4800bps.... reading NMEA data, parsing it, and
displaying it on a LCD.
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Subject: Re: BASIC Stamps
From: Andrew Rich <andrew.rich@bigpond.com>
Date: 12 Apr 2003 09:22:54 +1000
X-Message-Number: 12
Bob,
I use the BSII. It easy to program, can do serial and all the other
goodies. Works well with a GPS and a TNC. You can see some of my
tinkerings here :-
www.tech-software.net
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Subject: APRS Question (OT)
From: Andrew Rich <andrew.rich@bigpond.com>
Date: 12 Apr 2003 09:35:05 +1000
X-Message-Number: 13
Sorry this is off topic, but well it actually related, cause I want to
emial some aprs logs.
I am baffled by how an emial knows how to get to another computer , say
linux.
Does this sound right ?
1. You PC submits to a SMTP mail server.
2. Your SMTP mail server does a DNS lookup for the MX (Mail exchanger) for
that domain.
3. Your SMTP mail server forwards the message across the internet to the
second SMTP server.
4. You then raid the message using POP3 from the other end mail server.
Ok if that all sounds ok, then how do you get a single PC, say LINUX to
receive mail just for it ? When you don't have a POP3 post office, but
sendmail is running on that UNIX style platform.
Andrew VK4TEC tinkering with PERL SMTP and APRS serial routines
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Subject: Find-U DOWN?
From: "Bill Guthrie" <willy3jax@covad.net>
Date: Fri, 11 Apr 2003 19:46:50 -0400
X-Message-Number: 14
Is find-u down?
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Subject: Garmin GPS
From: "Dave Thege" <dthege@ncfcomm.com>
Date: Fri, 11 Apr 2003 19:24:33 -0500
X-Message-Number: 15
Will the Garmin GPS map 176 work with APRS? How does it compare with the
GPSIII+ or GPS V?
Dave N0XBN
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Subject: Re: APRS Question (OT)
From: Bob Nielsen <nielsen@oz.net>
Date: Fri, 11 Apr 2003 17:29:24 -0700
X-Message-Number: 16
On Sat, Apr 12, 2003 at 09:35:05AM +1000, Andrew Rich wrote:
>Sorry this is off topic, but well it actually related, cause I want
>to emial some aprs logs.
>
>I am baffled by how an emial knows how to get to another computer ,
>say linux.
>
>Does this sound right ?
>
>1. You PC submits to a SMTP mail server.
>2. Your SMTP mail server
>does a DNS lookup for the MX (Mail exchanger) for that domain.
>3. Your SMTP mail server forwards the message across the internet to
>the second SMTP server.
>4. You then raid the message using POP3 from the other end mail
>server.
>
>Ok if that all sounds ok, then how do you get a single PC, say LINUX
>to receive mail just for it ? When you don't have a POP3 post office,
>but sendmail is running on that UNIX style platform.
You just eliminate step 4, since that PC is the second SMTP server in
step 3.
If there is a DNS record pointing to that PC as the mail exchange
address for the domain, the mail will be directed there. Sendmail is a
mail server program which listens for connections on port 25. When
contacted by the sending mail server, a dialog is exchanged resulting
in the mail being received by sendmail (or exim, qmail, postfix, etc.)
If there is no MX record, the default case assumes that the part of the
address after the "@" is the mail server. Some mail servers will
refuse to send the mail if there is no MX record or if they cannot do a
reverse lookup on the IP address, however.
73,
Bob, N7XY
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Subject: Re: APRS Question (OT) (fwd)
From: Andrew Rich <andrew.rich@bigpond.com>
Date: 12 Apr 2003 11:05:49 +1000
X-Message-Number: 17
Bob,
Thanks for you swift reply. Just one last question. What would the DNS
entry looklike for just that one computer ?
assuming domain.com
laptop A 192.168.0.2
laptop MX 192.168.0.2
would this do it for :-
telnet laptop.domain.com
ftp laptop.domain.com
mail root@laptop.domain.com (root being a valid user on laptop)
Cheers Andy vk4tec
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Subject: Re: Find-U DOWN?
From: "Bill Guthrie" <willy3jax@covad.net>
Date: Fri, 11 Apr 2003 21:07:53 -0400
X-Message-Number: 18
I was able to get http://www1.findu.com/cgi-bin/find.cgi?call=KC4OUA to
work, but it is missing the raw packets. www2 is definitely down.
Thanks
Bill
----- Original Message -----
From: "tvsjr" <tvsjr@sprynet.com>
To: "Bill Guthrie" <willy3jax@covad.net>
Sent: Friday, April 11, 2003 8:50 PM
Subject: Re: [aprssig] Find-U DOWN?
>Bill-
>
>It seems to be. I'm getting no response (via ping or HTTP) from my
>EarthLink dialup or a server located on Qwest's backbone. It would appear
>to be dead. I'm sure Steve will update us when he gets a chance.
>
>73s,
>Terry/N5RSE
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Subject: Re: Find-U DOWN?
From: "Guy Story, KC5GOI" <kc5goi@tapr.org>
Date: Fri, 11 Apr 2003 21:19:23 -0500
X-Message-Number: 19
I have contacted to co-lo site and have requested The Planet contact me so
we can get this taken care of. It may be half an hour. (21:20 central). I
will announce when she is back up. Steve may have to check on the database.
Guy
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Subject: RE: APRS Question (OT)
From: Miller Scott Contr 30SCS/FTI <Scott.Miller@vandenberg.af.mil>
Date: Sat, 12 Apr 2003 02:17:44 -0000
X-Message-Number: 20
Keep in mind that a unix/linux box is going to have a local message store.
Typically, mail bound for a user on the system goes to
/var/spool/mail/<username>. When sendmail gets mail addressed to a domain
it considers local, it drops it in the user's spool file. It can come from
exim, smail, qmail, or any other MTA for that matter. Unix also has its own
local mail delivery mechanism if you're not going between machines.
A pop daemon, imap daemon, or local mail client like mail, pine, elm, or
whatever, just gets the mail from your spool file. Pop and imap give you a
way to get at it remotely. I use Outlook to get mail from my linux box
through pop3, but when the workstation's not on I'll get mail by running
pine on the linux box. Basically all it requires is access to that one
file.
You've got the MX thing right for the most part. MX records should also
have a preference value, with the lowest numbered records being used first.
MX routing isn't the only way to go, but it's the most common. Sendmail
supports a mailertable, which lets you explicity set routes for domains. We
use it at work for routing mail through a system of load-balanced firewalls,
virus scanners, and mail servers. No point in doing an MX lookup when you
only send mail to one place.
And then there's the old UUCP format, from back in the days before DNS. A
bang format address might look something like:
rusx!umoskva!kgbvax!dimitri
So basically you've got to know the exact path to take. Not much point in
that these days, when mail exchangers are typically connected to the
Internet full time. My first email account was on a local system that would
dial up every 12 hours to exchange mail. Probably with one of those
expensive Telebit Trailblazer 18 kbps units, to save LD charges. Ah, the
bad old days. Nothing like using an FTP-to-mail gateway to browse a server
and download files when you've got a 24 hour turnaround time.
Ok, enough Unix history for today.
Be thankful you didn't ask about VMS. ;]
Scott
N1VG
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