We are serving the quarantined files of Mailscanner. Files are often sent with special characters, and mailscanner are messing them up.

An example is this filname: Resume_ R%E5dsm.doc
This file has both white space (which is ok) and %, which is not ok.

This is the presented url: (yes it has a whitespace, but the browser can handle that)
http://someserver/somedirectory/Referat_ R%E5dsm.doc

When I navigate to the url i get 404, and the url looks like this:
http://someserver/somedirectory/Referat_%20R%E5dsm.doc

If i manually substitute the last % with %25 it works fine.
http://someserver/somedirectory/Refe...0R%25E5dsm.doc

Any suggestions to both changes in mailscanner and apache is appreciated!

I'd be interested to know where you are (geographically) or your users at least.
When I mouse over the one that gets 404, then where it actually looks like the 'R%E5dsm', the %E5 becomes a lowercase 'a' with a small circle over the top ie a-circle https://en.wikipedia.org/wiki/Diacritic
See http://tlt.its.psu.edu/suggestions/i...ge/nordic.html for details ...
In other words, its a locale issue.

You need to decide how you want to handle this eg make whichever Scandinavian locale your locale in mailscanner/apache, or use a translation table/regex to reduce to std English 26 char alphabet.
To reduce, I would probably use Perl, which has a very powerful regex engine.

HTH

The a with a ring is a scandinavian scpecial character, which is the reaseon this isn`t working.

http://www.utf8-chartable.de/
U+00C5 Å c3 85 LATIN CAPITAL LETTER A WITH RING ABOVE
U+00E5 å c3 a5 LATIN SMALL LETTER A WITH RING ABOVE

The users will be satisfied as long as the url are working, and they can download the attachement.

We have tried specifying utf8 and ISO-8859-1 in apache, as for how to change locale in mailscanner we have found no way to do this.

Yeah, I realised later I should have mentioned UTF-xxx etc also this may be useful http://linux.die.net/man/1/iconv.

You may or may not be able to change locale within the mailscanner prog cfg itself; try asking the people who wrote it.
You could try setting (& exporting) the locale setting eg http://tldp.org/LDP/lfs/LFS-BOOK-6.1...7/profile.html for the owning user's login.

To be honest I've never actually had to get into it at this level, so I'm probably going to leave it at that & hope a locale guru comes by.
Maybe you can edit (or ask Mods) the qn text to include the phrase 'locale issues/UTF'?

Good Luck