sendmail program logs errors, information, and
debugging messages using the syslog(3) facility.
By default, sendmail uses a 1024-byte buffer to
assemble each message before dispatching it, but some systems
don't accept a buffer this big. For such systems you
can reduce the size of that buffer by defining SYSLOG_BUFSIZE with a
APPENDDEF(`confENVDEF', `-DSYSLOG_BUFSIZE=512 ')
reduce syslog(3)'s buffer size
First, note that SYSLOG_BUFSIZE is correctly set in
(include/sm/conf.h beginning with V8.12) and for
all the supported versions of Unix. Second, note that setting the
buffer to fewer than 256 bytes causes sendmail
to log many more smaller messages (each item of information on a
separate syslog(3) line). If SYSLOG_BUFSIZE is
less than 89, some logging information will be lost.
SYSLOG_BUFSIZE has an effect only if sendmail
was compiled with LOG defined (LOG). If you
are running a precompiled version of sendmail,
there is no way to determine the setting of SYSLOG_BUFSIZE.
New ports should be reported to
email@example.com so that they can be folded
into future releases.