I am really having nightmares about this Protocol Inspector thing! First I was having problems with one of my client computers which was running Outlook 2002 (problems only with this PC because it's the only in my network accessing mail through SMTP - others use webmail). Everytime he tried to send and e-mail (I further discovered that the problem only happened when the message was HTML formatted - pure text didn't cause problems) he would receive a Time Out error, or something like this. Before you ask, no, the client PC does not have any anti-virus installed in it. What I did was create a rule in my traffic policy to disable Protocol Inspector for SMTP traffic. It then worked OK.
Then I had problems with my company Intranet. I am using MS SharePoint Portal and again I had to disable Protocol Inspector for HTTP local traffic!!
And then the employees started complaining that they weren't able to attach (upload) files in the webmail. I verified the problem and again, disabling Protocol Inspector, everything worked, so, one more rule disabling it for HTTP to my ISP's webmail host.
Why am I having so many problems with Protocol Inspector?? Attached is my Traffic Policy (the only one which is working now).
[Updated on: Wed, 15 September 2004 16:57]
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