On Thu, 2006-06-08 at 17:09 +0000, edward capullo wrote:
> I have had inconsistent emails for this site also. For example I didnt get 
> John W's prior text nor did I get Chuck V's text now. I am on 
> Hotmail.com(MSN)-any suggestions as to why this just seems to have happened 
> in the last few days.....Eric???

I'm looking into it. The quick answer for the moment... don't send
messages to the mailing list in HTML or RTF format. Most mailers allow
you to specify a format to send (HTML, RTF or plain text).

The problem is with conversion of certain HTML and RTF format messages
into plain text. As you all know, we don't allow attachments or HTML
messages on the list due to their ability to spread viruses and
malware. 

Attachments just get stripped off of all incoming messages and
unceremoniously discarded. That's easy....

The hard part is dealing with HTML and RTF. I could just flat out reject
them, and bounce them back, but that seems rather rude. So I take the
message, disassemble it, and rewrite it using just plain text. Every
mailer *should* send all messages with a separate plain text version.
That's the standard protocol.

Unfortunately there are a couple of email programs out there that are
broken and violate the standards and are only sending an HTML or RTF
version of the message without the plain text version, or with an empty
plain text version.

What changed is that I used to run every message through a conversion up
front that stripped attachments and converted everything to text.
Unfortunately, that had the nasty side effect of making it much more
difficult to detect spam. So I removed the brute force text conversion
from the mail processing chain in the latest version and just rely on
the sender to include the plain text version. Apparently there are still
some people using old or broken mailers that don't format HTML and RTF
messages correctly. 

Anyway, as I said, I'm looking at it trying to figure out what the best
method to fix this is. If you send text only messages to the F500 list,
then you won't have a problem. But send HTML or RTF messages to the list
from a non-compliant mailer, and the anti-spam / anti-virus filters will
eat the message body. 

--Eric



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