Three possibilites that I can think of:

1. Yahoo's serverside scanning of outgoing mail is causing the problem; or

2. NAV's Email Protection "horked" your current identity = Try one or more
of your accounts in a new Named Identity (File Identities Add new
identity) and have the same correspondent send you a message with a PDF
attachment.

Assuming all is well, (1) compact all folders in the old identity, (2)
import messages from the old identity into the new one, and then (3) delete
the old one (File Identities Manage Identities).

3. Ask your correspondent to send you a message with a PDF attachment from
an account other than his Yahoo acount and see if the behavior persists *in
the new identity or the original one*.
--
~PA Bear

Nick wrote:
Thanks for the reply. I've checked with the sender.

1. The sender is using Yahoo (web based) email.

2. I don't think the user has any control over the message format with
this
email client.
Looking in the message source I see the message text is sent both as plain
text:

Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit

and HTML:

Content-Type: text/html; charset=iso-8859-1
Content-Transfer-Encoding: 8bit

Headers for the attachment a

Content-Type: application/pdf; name="Publisher newsletter FEBRUARY
2008.pdf"
Content-Transfer-Encoding: base64
Content-Description: 2126997828-Publisher newsletter FEBRUARY 2008.pdf
Content-Disposition: attachment; filename="Publisher newsletter FEBRUARY
2008.pdf"

Nick



"PA Bear [MS MVP]" wrote in message
...
1. Sender's probably using MS Outlook.

2. Ask Sender to re-send using Plain Text format.

3. Ask Sender (and any other correspondents who use MS Outlook) to only
send messages to your using Plain Text.
--
~Robear Dyer (PA Bear)
MS MVP-IE, Mail, Security, Windows Desktop Experience - since 2002
AumHa VSOP & Admin http://aumha.net
DTS-L http://dts-l.net/


Nick wrote:
I'm using OE 6 with XP Home SP2 and all recent updates, Norton A/V
14.4.0.12. (email scanning now disabled).

A sender is trying to send me a PDF attachment. Not certain what mailer
he's using but I think it's Yahoo. However, I never see the attachment.

If I view the incoming message source I can see the encoded attachment
but
there is no attachment icon showing in the inbox.

I can send a PDF to myself without a problem, the sender says other
people
can receive the PDF from him. I have received similar files before from
the
same sender without problems.

This problem appears to be similar to that raised in a recent earlier
thread.

Grateful for any ideas or suggestions.
Nick