> What I actually did was I grabbed Security Sages header_check file. It > doesn't seem that large to me(it is 1515 lines). We get about 35k > messages a day and I reject about 30K in smtpd?
That it huge for a header check file! Typically they are well under 100 lines. > > if you aren't using pcre:, then switch to pcre: and get 30+ times > > efficiency. > > I would guess I need to rebuild postfix to enable this? If it was not built in before, yes. There is a very good README on it that comes with Postfix. If rebuilding from the same source files, remember "make tidy" first. If taking this opportunity to upgrade, you will be in a different source tree and do not need to use that command. > Also, should I make any changes to the regexp file? If you know about and understand regexp optimization, yes, make changes. If not, research that topic first so you do not accidentally make things worse. --Eric
