Should the
calculated length of the header (as stored in {hdrlen}) prove longer than the limit set at
compile time by MAXNAME (?§3.4.22 on page 120), the following error will be logged and
the too-long header will be truncated:
Warning: truncated header 'hdr' before check with 'ruleset' len=len max=MAXNAME
Here, hdr is the name of the header (the text to the left of the colon). The ruleset is either
the number or the name of the rule set that will be called to check this header. The len is
the length of the value (the part of the header to the right of the colon) before it was truncated.
Generally, unless you redefined it, the maximum length is set by MAXNAME, which
defaults to 256 characters (including the terminating zero-value character).
Note that this reports only that the value (the part of the header to the right of the colon) is
too long. If the name (the part of the header to the left of the colon) is longer than 100
characters, it will never be checked.
14.6.12 mailer=
The delivery agent used syslog equate
The sendmail program calls other programs (called mail delivery agents) to perform that
delivery. Some delivery agents are external (as for local delivery), and others are internal (as
for network delivery). The mailer= syslog equate shows the symbolic name (?§20.1 on page
711) of the delivery agent that was used to perform delivery to the recipient:
mailer=agent
A list of symbolic names assigned to delivery agents can be viewed withth e -d0.
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