Can't send attachments or large emails

P

Patrick

Added a new desktop PC to a D-Link 614+ wireless network and Outlook 2003
won't send large emails or emails with attachments. The other PC on the
network works fine. Only difference between the two PC's is the new one is
running XP Home - SP2 and the old one SP1.

Spent over an hour on the phone with my ISP and they ran out of ideas.
Tried everything... removing and reinstalling the account... removing and
reinstalling Outlook... tried Outlook Express... same thing. Tried restoring
the system completely with recovery disks. Removed and reinstalled AVG Free.
Installed AVG without the email scanner... still can't send attachments.
Keep getting an 0x---- error message that keeps changing but always referring
to smtp.

Any other suggestions?
 
N

neo [mvp outlook]

Did you try adjusting the MTU?

Also other things to watch for in dropped SMTP connections is any type of
internet security product that scans inbound & outbound e-mail. (e.g.
Seeing lots of posts centering around Symantec/Norton, ZoneAlarm, Panda,
..etc & XP SP2. SP2 includes a change in how localhost connections are
handled.)
 
P

Patrick

The MTU was set at 1452 from the factory. The ISP suggested trying to lower
it to 1400 but that didn't make any difference.

The PC came with Norton installed from the factory which I deleted and
installed AVG70Free. I had read that Norton had problems on SP2. Maybe
there are some residuals from that deletion?

The only other application that I can think of that is scanning emails "is"
AVG... but I reinstalled it without the email scanner.
 
P

Patrick

The patch didn't make any difference. Small emails will go but larger ones
and ones with attachments hang and end with error message 0x8004210B.

One thing I did come across that disturbed me a bit... I checked the
processes running to see if there was anything strange that might be hanging
the outgoing emails and I noticed there are 4 instances of svhost.exe running.

I seem to recall that there is a legimate reason for this application to
run... but 4 separate app's running at once?

I searched the net and discovered that there is a worm that disquises itself
with this name that has it's own smtp engine.

Could this be the culprit?
 
P

Patrick

My ISP doesn't require SSL and SPA authentication. The other PC (the one
that works) doesn't have these settings activated.

The ports that both PC's are set to are POP=110 SMTP=25

Is there any sense in downloaded the fix and applying the registry edit
seeing as my ISP doesn't require authentication?
 
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