banned_filename_re expressions

Bill Measday bill at
Fri May 6 00:41:06 CEST 2016


I've tried searching for an answer to this, but it's pretty hard to 
search for as you will see.

Could someone please explain to me in setting up banned_filename_re in 
amavisd.conf why some entries have an "i" on the end.

For example:

     qr'^\.(exe-ms|dll)$',                   # banned file(1) types, 

doesn't, but

     qr'.\.(pif|scr)$'i,                     # banned extensions - 


Obviously there is logic here, but I'm missing it.  Perhaps it's a perl 
issue (I'm no good at perl).

I couldn't see anything in the docs that helped me, and any search with 
"i" in it is doomed to failure.

Thanks in advance,


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