VPOP3 supports DOS-style wildcards in many places of the configuration. You may be familiar with DOS wildcards (they are used in Windows & Linux as well, but most people know them from the days of MSDOS, so we call them DOS-style wildcards), but, if not, the following should help.

The wildcards supported by VPOP3 are:

* - this matches any sequence of characters, including an empty sequence

? - this matches any single character (but not a missing character)

Wildcard comparisons are 'anchored' at start and end, and they are performed in a case insensitive manner.

So, given the word "abracadabra":

ocad will not match

o*cad* will match

oabra* will match

o*abra will match

oabracadabra* will match

oabra*abra will match

oabra???abra will match

oabracadabr? will match

oabracadabra? will not match


If you need more flexible text comparisons, then look at Regular Expressions in the next section.