Chunkingclient, nochunkingclient, chunkingserver, nochunkingserver Channel Options

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Chunking SMTP (chunkingclient, nochunkingclient, chunkingserver, nochunkingserver)

RFC 3030 defines the CHUNKING extension to SMTP. Chunking provides an alternative BDAT command that can be used instead of the normal DATA command to tranfer message content. BDAT uses octet counts rather than dot-stuffing and hence is more efficient. The chunkingclient option, the default, tells the SMTP client to use BDAT if the server says it supports it. nochunkingclient disables this usage.

The chunkingserver option tells the SMTP server to announce suport for and allow use of the CHUNKING extension. nochunkingserver disables chunking support in the server. chunkingsever is the default.