Name
${cert_md5}
Synopsis
As a
part of the STARTTLS form of authentication and encryption,
certificates are usually exchanged. This
${cert_md5} macro is assigned the result of an
md5(1) 128-bit
“fingerprint” of the certificate
presented by the other side. That value might look like this:
5e5bb09c1a3488a3216aaabe23081caf
The ${cert_md5} macro is not used in the default
configuration file, but is available for use in rule sets of your own
design. Note that a $& prefix is necessary
when you reference this macro in rules (that is, use
$&{cert_md5}, not
${cert_md5}).
${cert_md5} is transient. If defined in the
configuration file or in the command line, that definition can be
ignored by sendmail.
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