IpAddress and Connector token in script filtering

[previn]

Hi,

I would like to know what the difference is between: [ME_IPADDRESS] and %IPADDRESS%. Can they both be used in a postoffice script filter?

Are they filled in all circumstances, or will they only be filled if it is an external SMTP message coming in? If I want to check whether [ME_IPADDRESS] is empty, would I do something like this, or do I need to use the CriteriaMet function?

If [ME_IPADDRESS] = "" Then....

Also, what are the possible values that [ME_CONNECTOR] could be set to? What would this be set to if an e-mail is coming in from external SMTP?

Thanks,

Previn