Jason LaMar wrote: >Thanks for helping me out with this. As a follow-up question, because >(obviously) I'm a regexp newbie: If I wanted to use this statement as a >basis ... > >\nfrom:[EMAIL PROTECTED]@(?!fubar.com[>\s]) > >... BUT I also wanted to allow messages from any fubar.com sub-domain >(mail.fubar.com, as an example), how should I modify this regexp to >accommodate that? If it would make it any easier, the specific (additional) >sub-domain I would need would be cc.fubar.com.
Actually, my original regexp is not quite right. In practice it probably makes no difference, but fubar.com in the above will also match and accept fubarxcom or fubarzcom, etc. since . matches anything, but since without an actual ., it wouldn't be a valid domain, it really doesn't matter. The strictly correct version of the above is \nfrom:[EMAIL PROTECTED]@(?!fubar\.com[>\s]) i.e, put a \ in front of the . to make it match literally a . For fubar.com and cc.fubar.com, you could use \nfrom:[EMAIL PROTECTED]@(?!(cc\.)?fubar\.com[>\s]) which will match 0 or 1 'cc.' followed by fubar.com or you could use \nfrom:[EMAIL PROTECTED]@(?![^@>\s]*fubar\.com[>\s]) which will match 0 or more of any single character except @, > or white space followed by fubar.com. There are lots of other ways to do this too, but those should get what you want. A different approach which is more flexible for adding more domains is to have a series of 'accept' rules each matching a simple pattern (or one accept rule with multiple patterns) followed by a discard rule that matches anything. E.g., in the accept rule put \nfrom:[EMAIL PROTECTED]@fubar\.com[>\s] \nfrom:[EMAIL PROTECTED]@cc\.fubar\.com[>\s] and in the discard rule just put ^ (which will match at the beginning of the headers string and thus will match any message at all and discard any message that wasn't matched in the preceding rule(s)). Then you can easily add additional patterns to the accept rule if it becomes necessary to accept additional domains. -- Mark Sapiro <[EMAIL PROTECTED]> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org Security Policy: http://www.python.org/cgi-bin/faqw-mm.py?req=show&file=faq01.027.htp
