Postfix and Linux
Berkeley DB issues
Warning: if you can't compile Postfix because the file "db.h"
isn't found, then you MUST install the Berkeley DB development
package (package name: db???-devel-???) that comes with your Linux
system. Only that package contains the files that correspond to the
Berkeley DB version that is used by the system library routines.
DO NOT download some Berkeley DB version from the network.
Every Postfix program will dump core when it is built with a different
Berkeley DB version than the version that is used by the system
library routines. See the DB_README file for further information.
On RedHat Linux 7.1 and later procmail no longer has
to write the mail spool directory. Workaround: chmod 1777
LINUX syslogd uses synchronous writes by default. Because
of this, syslogd can actually use more system resources than
Postfix. To avoid such badness, disable synchronous mail logfile
writes by editing /etc/syslog.conf and by prepending a - to the
Send a "kill -HUP" to the syslogd to make the