Verizon Express Net - VPN sending e-mail issue

[TMPadmin]

Long story. I have a new Samsung i700 pocket PC 2002 cell phone. I can connect to my pptp server and login to any server with Terminal Services. I can receive e-mail from any of my accounts on the exchange box. I can send as well UNLESS I have an attachment on the outgoing e-mail. The smallest one so far that was tested was 17K (would not send). It doesn't matter where I send the e-mail, internally or external to the domain. I have other pop accounts outside of my work account but (as you expect) they do no allow relaying e-mail, so I can't send through them at all. I can see myself connect on the PPTP server and can see bits flying around in and out until it starts sending the e-mail, at that point it stalls, then once the phone gives up and starts receiving e-mail the bits start flying again.

Anyone ever see an issue like this? Does anyone else have verizon express network on their phone that sends or receives e-mail on it?

Thanks

TMP