Re: [courier-users] Spam with Delivered-To header

Sami N=E4=E4t=E4nen wrote:
> On Friday 04 May 2007, Bob Kinney wrote:
>> chomp(my @DOMAINS =3D <$fh>);
>>
>> # construct a portion of a regex
>> my $domain_regex =3D '(' . join( '|', @DOMAINS ) . ')';
> =

> You may want to change this to the following version
> =

> my $domain_regex =3D '(?:' . join( '|', @DOMAINS ) . ')';
> =

> This version will avoid that unnecessary capture group.
> I of course assume that you don't need this in some other re to capture =

> the matched domain.
> [...]

Actually, the filter could simply reject the message if the header
matches the recipient in a case-sensitive plain comparison.

>>
>> return "500 Already have my Delivered-To header."
>> if $line =3D~ /^Delivered-To:.*\@${domain_regex}/i;



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