Здравствуйте.
В сообщении от 13 марта 2007 Alexander Shikoff написал(a):
> > Filtering HTML seems as bad idea. Indeed you can - if you want to loose
> > half of mail from outside.
>
> Sorry for little offtopic. Filtering HTML messages may be a part of
> corporative security policy. And it's possible to give 550 error with text
> like 'Only plaintext messages is acceptable' ;)
Agreed.
> > Filtefing image attachments is easy. If your Exim built with 'demime'
> > check, just add on top of DATA ACL this:
> >
> > deny
> > message = Images not allowed, please zip them before send.
> > demime = gif:jpg
> >
>
> 'demime' is deprecated way to implement filtering attachments
> (http://www.exim.org/exim-html-4.66/doc/html/spec_html/ch41.html#SECTdemime
>cond) It's recommended to use SMTP MIME ACL instead.
You right, but it seems more complicated. (read: 'I cannot write condition
right now without looking to spec')
> Keep in mind that since exim does not support RFC 2231 yet, neither MIME
> ACL nor 'demime' are not filtering efficiently attachments with non-ASCII
> file names.
I really never saw spam with non-ASCII attached .gif filenames :)
:%0A>%20%0A>%20>%20>%20Filtering%20HTML%20seems%20as%20bad%20idea.%20Indeed%20you%20can%20-%20if%20you%20want%20to%20loose%0A>%20>%20>%20half%20of%20mail%20from%20outside.%0A>%20>%0A>%20>%20Sorry%20for%20little%20offtopic.%20Filtering%20HTML%20messages%20may%20be%20a%20part%20of%0A>%20>%20corporative%20security%20policy.%20And%20it's%20possible%20to%20give%20550%20error%20with%20text%0A>%20>%20like%20'Only%20plaintext%20messages%20is%20acceptable'%20;)%0A>%20%0A>%20Agreed.%0A>%20%0A>%20%0A>%20>%20>%20Filtefing%20image%20attachments%20is%20easy.%20If%20your%20Exim%20built%20with%20'demime'%0A>%20>%20>%20check,%20just%20add%20on%20top%20of%20DATA%20ACL%20this:%0A>%20>%20>%0A>%20>%20>%0A>%20>%0A>%20>%20'demime'%20is%20deprecated%20way%20to%20implement%20filtering%20attachments%0A>%20>%20(http://www.exim.org/exim-html-4.66/doc/html/spec_html/ch41.html#SECTdemime%0A>%20>cond)%20It's%20recommended%20to%20use%20SMTP%20MIME%20ACL%20instead.%0A>%20%0A>%20You%20right,%20but%20it%20seems%20more%20complicated.%20(read:%20'I%20cannot%20write%20condition%20%0A>%20right%20now%20without%20looking%20to%20spec')%0A>%20%0A>%20>%20Keep%20in%20mind%20that%20since%20exim%20does%20not%20support%20RFC%202231%20yet,%20neither%20MIME%0A>%20>%20ACL%20nor%20'demime'%20are%20not%20filtering%20efficiently%20attachments%20with%20non-ASCII%0A>%20>%20file%20names.%0A>%20%0A>%20I%20really%20never%20saw%20spam%20with%20non-ASCII%20attached%20.gif%20filenames%20:)%0A>%20%0A>%20%0A>%20%0A>%20 "Reply to this message")