Message Header Contents
10.7.8 Delivery Failure
In the event of relay failure, the sending relay must generate a failure message, which should be in the format of a DSN.
10.7.9 Image File Format
The Sending Internet Fax devices MUST be able to write minimum set TIFF files, according to the rules for creating minimum set
TIFF files defined in TIFF for Facsimile (the S profile), which is also compatible with the specifications for the minimum subset of
TIFF-F in F Profile for Facsimile, RFC 2306. The Receiving Internet Fax devices must be able to read minimum set TIFF files.
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