Data truncation: Data too long for column 'contentType' at row 1

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What steps will reproduce the problem?
when send message with attachement with big name...
in the content type they can add the file name...
so the content-type can be larger than 255...

What is the expected output? What do you see instead?
database insertion of the message...
instead the message is rejected directly without smtp error message (connection 
close).

What version of the product are you using? On what operating system?
last git

Please provide any additional information below.

i've resized the database field to 550... but is not the good solution... i 
think the most elegante solution is to analyse content type and remove extra  
subtype (http://www.w3.org/Protocols/rfc1341/4_Content-Type.html) before insert 
to database...

Original issue reported on code.google.com by mcarbonneaux on 27 Jul 2014 at 4:16

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[deleted comment]

[GoogleCodeExporter]

Sample of content-type:
application/vnd.openxmlformats-officedocument.wordprocessingml.document;    name=   "
=?iso-8859-1?q?point_1_-_r_6_-xxxxxxxxxxx-xxxxxxxxxxxx_du_xxx_de_i'xxx_su?= 
=?iso-8859-1?q?r_le_xxxxxx_de_xxxxxxx_des_xxxxxx_de_xxx_=e0_xxxxxxxxxxx_g?= 
=?iso-8859-1?q?roup_-_recueil_de_l'avis.docx?="

Original comment by mcarbonneaux on 27 Jul 2014 at 4:29

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