SMTP; 500 Line too long

A client can't get us and keeps getting a bounce back message stating something about SMTP; 500 Line too long

This is the only client getting the message.

We run server 2003, exchange and have a watchguard x550e firewall. I read somewhere that I need to change a setting on the watchguard.

Any ideas how
QGoldenAsked:
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dpk_walConnect With a Mentor Commented:
You must be using WG SMTP proxy for inbound emails; go to Policy Manager; edit the SMTP service and go to Properties tab; click View/Edit proxy button; under Genral Settings->Limits; you have "Set the maximum email line length to"; default option is 1000 bytes.
You can increase the limit; this would increase limit for everyone; otherwise, configure a separate SMTP service for the client with line length limit increased, configure service as below:
Enabled and Allowed; from public-ip-client; to nat-as-configured-in-original-service

Thank you.
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HIPLCommented:
Hello

Can you please tell me where i can find Policy Manager in SBS 2003 R2..

Thanks in Advance

VIkas
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