On 11/13/2011 4:19 PM, Rich Shepard wrote: > A common form of spam comes with the body text in all uppercase > letters. > Perhaps the senders are all using Apple ][e computers. Anyway, if I > add the > following to /etc/postfix/body_checks will I unintentionally reject > valid > messages? > > /[A-Z].*/
This is doomed to failure. First, as documented, postfix header_checks and body_checks ignore case by default. To make them case sensitive, add a /i to the expression. /FOO/i Secondly, your expression doesn't allow for things such as spaces or numbers or punctuation; that can be fixed, but don't bother. (Actually, your expression matches "one cap letter followed by anything". Obviously not what you intend.) Now the bad news: Remember that postfix body_checks evaluates the message *one line* at a time. So even a proper "match ALL CAPS" expression would reject any message that has any one single line of all-caps text, such as "WARNING" This test is much better suited for SpamAssassin or some other filter that can examine the whole body. IIRC SpamAssassin already includes tests for all-caps. -- Noel Jones
