Denote end-of-headers for a message.
||dkim_eoh() is called when the delimiter between the message's
headers and its body is encountered.
- This function may return DKIM_STAT_NOSIG when verifying if no
signature was present in the message headers. This is simply advisory;
you must continue executing down to the
call to determine whether or not a signature should have been present.
- This function can return DKIM_STAT_SYNTAX when verifying if a
header that must be signed was not included in a received signature, or
if the message appeared to contain no sender header field. In the latter
case, the dkim handle is rendered unusable by future calls
to dkim_body() or
- This function can return DKIM_STAT_CANTVRFY when verifying if all
discovered signatures were either marked to be ignored, contained syntax
errors, or failed verification attempts. This is only tested if the
DKIM_LIBFLAG_EOHCHECK library flag is set.
- This function can return DKIM_STAT_SYNTAX in either mode if
the input message does not conform to the header field count checks
imposed by the DKIM_LIBFLAG_STRICTHDRS library flag.
- This function can return DKIM_STAT_NORESOURCE for a verifying
handle if an attempt to construct a DNS query based on the selector and
domain in a signature exceeded the maximum allowable query size.