"dreamer" wrote in message news:3d4Bi.101794$rX4.78258@pd7urf2no...

I'm sure what i am missing here. Whenever I try to send an e-mail
around 5MB or so, Outlook 2003 says it is sending it and then
doesn't. I get a message saying the following in the 'SEND/RECEIVE
PROGRESS' window. I called my ISP (Shaw) and they said it is my CA
Antivirus. So I disabled it. Still did the same thing. 5 minutes
later, the attachment (PDF 6MB) shows up. I have no idea what is
going on. Is there a setting in Outlook I should be looking for. I
never had this problem before.

Task 'shawmail - Sending' reported error (0x8004210B) : 'The
operation timed out waiting for a response from the sending (SMTP)
server. If you continue to receive this message, contact your server
administrator or Internet service provider (ISP).'
and
Task 'shawmail - Sending' reported error (0x800CCC0B) : 'Unknown
Error 0x800CCC0B'


What is your e-mail provider's anti-spam quota on maximum size per
e-mail?

If you are sending a 5MB e-mail, it isn't just text or even just HTML.
You are sending binary content, like executables or images. ALL
e-mail - and I mean all e-mail - gets sent as plain text. Binary
content is encoded in plain-text sections within the e-mail.
Converting binary to text will enlarge the e-mail by 2 to 3 times the
original size of the binary content. You might think you are sending
a 5MB image attached to an e-mail but after encoding that e-mail ends
up exceeding the 10MB/message anti-spam quota on your personal e-mail
account.

If you enable e-mail scanning in your anti-virus software, especially
for outbound e-mails, then obviously that anti-virus program has to
interrogate that huge message to scan for pests before it then gets
passed to the mail server. This means that after your e-mail client
has told the mail server that it is sending a message that your
anti-virus program then delays delivery of that message while
interrogating it, and that delay exceeds the timeout by the mail
server figuring that what you said you were going to send isn't really
forthcoming.