Beta 4.49.2 released --- faster?

Julian Field MailScanner at
Sat Dec 17 19:39:57 GMT 2005

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One thing. The speed improvement won't affect SpamAssassin, but for 
virus scanning it should extract attachments faster than before.

Julian Field wrote:

> I have just released beta version 4.49.2.
> Download as usual from
> In this version the main target is speed. If things work as intended, 
> there should be major speed improvements for sendmail and Postfix 
> systems (sendmail in particular).
> Please do try this and let me know if you think it is running faster 
> than previous versions, data supplied to me indicates it should be 
> fairly dramatic and noticeable.
> I have also implemented 4 new configuration options for the benefit of 
> web-based administration interfaces for MailScanner, simplifying the 
> whole filename and filetype rules system for them. This will make it 
> dramatically easier to change the filenames allowed and denied for 
> different people, without having to get into multiple 
> filename.rules.conf files and all that jazz. They are "Allow 
> Filenames", "Deny Filenames", "Allow Filetypes" and "Deny Filetypes". 
> They work like normal configuration options, and their value is a list 
> of patterns to match. Read the MailScanner.conf for a more detailed 
> explanation and examples.
> Lastly, I would like to wish you all a very Happy Christmas and a 
> Merry New Year. I hope you all get the chance to have a break for a 
> day or two, and let us look forward to having a virus-free and mostly 
> spam-free 2006 on our mail systems!
> Cheers!
> The full Change Log is this:
> * New Features and Improvements *
> - Now changes the command line listed in `ps` (ie $0) to show what
>  MailScanner is doing. Should help diagnose slow system problems.
> - Speed improvements for sendmail and Postfix systems by changing the
>  way temporary files are handled and how attachments are parsed. This
>  should be really noticeable if I've got it right.
>  Thanks for the great help of the guys who know who they are.
> - 4 new configuration options, which list patterns against which 
> filenames
>  and filetypes are matched to see if we should allow them or block them.
>  This is implemented for the benefit of web-based configuration 
> systems for
>  MailScanner, it is not really intended for human use as it will 
> complicate
>  the filename/filetype matching unless you understand it. Read the 
> comments
>  in the MailScanner.conf and suggest better explanations!
>  "Allow Filenames", "Deny Filenames", "Allow Filetypes", "Deny 
> Filetypes".
>  Note: There are 2 new entries in languages.conf so remember to
>        run an upgrade_languages_conf.
> * Fixes *
> - Changed Postfix code to better support latest revision of Perl.

Julian Field
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