[Dovecot] Size limit for a single mail in the IMAP store?

[Ralf Hildebrandt]

Postfix has "message_size_limit = 26214400", but that doesn't keep my
users from sending huge messages which canot be sent, but can be
stored in the IMAP "Sent" folder.

Is it possible to set a size limit for the size of a single mail?

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | http://www.charite.de