On Sun, Jun 16, 2002 at 11:17:08AM +1200, Simon Lyall wrote: | On Sat, 15 Jun 2002, Derrick 'dman' Hudson wrote:
| > Isn't that what "Undisclosed Recipients:" is meant for?
| Please note that Outlook mailers actaully violate the RFC's
Does this surprise anyone? <no show of hands> I didn't think so.
| headers_check_syntax = true
I'm using exim 4 now, and I have
deny !verify = header_syntax
in my DATA ACL.
| We were running it for a while since it blocked a reasonble amount of spam
It is a very cool feature. It's also cool to have an ACL that rejects
any message with 8bit data in the headers.
| ---cut-here---
|
| 1. The Problem
|
| When Outlook is used to send email to a list of people the ihug.co.nz
| addresses will bounce with an error message similar to:
|
| 550 Syntax error in 'To' header: "@" or "." expected after "Undisclosed-Recipient":
|failing address is: <Undisclosed-Recipient:;>
Mmm hmm. I've seen a bunch of those in my rejectlog.
| 2. The Quick Solution
Don't use an outhouse? :-)
| When the list maintainer sends email to the list they should put a real email
| address (their own is best) in the "To: " field and *then* Bcc to the list.
| This will fix the error.
A band-aid can fix a broken bone too :-).
| 3. Why does this happen?
Some software vendor, not to mention any names
*cough*microsoft*cough*, doesn't like to play with the rest of the
world.
| The problem is caused by people who use Outlook
You got it.
| and Bcc an email to a list of people.
oh, that wasn't a complete sentence ;-).
| There is some reference to the problem at:
|
| http://www.exim.org/pipermail/exim-users/Week-of-Mon-20000522/018366.html
2000. That's old. Recently someone was trying to craft a rewrite
rule to fix it hoping to work around the bug.
This bug rather reminds me of the "begin" bug.
As you have no doubt discerned by now, I have no sympathy for
Microsoft LookOut and it's continuous and ever increasing cause of
breakage on the Internet. I don't think I've lost any valuable mail
due to that violation. The reject log shows who the message is from,
etc, and I run a small enough service to not worry about "customer"
complaints.
<parody>
How do I hate Outlook ? Let me count the ways.
</parody>
HAND,
-D
Fitting .sig (randomly choosen, really), I think, relating to the
lack of correction found in Outlook.
--
Whoever loves discipline loves knowledge,
but he who hates correction is stupid.
Proverbs 12:1
http://dman.ddts.net/~dman/
msg06433/pgp00000.pgp
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