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LAN firewall causes error sending email through Notes on VPN?

I use cisco VPN dialer(3.5.2 Windows 2000 Professional) to connect back to my company VPN server through my clients' LAN's at different locations. At some client locations (mostly Healthcare organizations), I can not send email through Notes but IM/tcp/http/https/retrieving emails and all other functions are okay. If I insist to send email, it will fail and break the VPN connection. At most other clients, I don't have any issue with cisco VPN dialer. My question is, what client LAN firewall settings prevent me to send email through Notes? So I can talk to the clients to change the firewall policy to correct the issue. Is any way I can reconfigure my cisco client to avoid the problem?

Thank you!

1 REPLY
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Re: LAN firewall causes error sending email through Notes on VPN

Hi,

You can try lowering down the MTU on the PC to around 1200B, by using the utility that comes with the vpn3000 client called setMTU.

Thanks,

Afaq

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