-d22.1
Trace tokenizing an address: prescan( ) Debug command-line switch
Processing of rules requires that all addresses be
divided into tokens. The -d22.1 (a.k.a. -d22) debugging switch causes
sendmail to print the various
steps it takes in tokenizing an address.
In addition to tokenizing, the prescan( ) routine also normalizes addresses. That is, it removes RFC2822-style comments and recognizes quoted strings. Be aware that rules are also viewed as addresses and processed by prescan( ) when the configuration file is being read.
The -d22.1
debugging switch tells sendmail
to complain if the first token in the address it is
parsing turns out to be nothing:
prescan: null leading token
This can happen if an address (or rule) contains only RFC2822-style comments in parentheses.
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