On Wed, 2006-05-03 at 13:37 +0200, DINH Viêt Hoà wrote:

On 03 May 2006, at 12:25, Timo Sirainen wrote:

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On Wed, 2006-05-03 at 03:17 +0200, DINH Viêt Hoà wrote:

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 Hello Timo and other dovecot-dev or users,

It looks like Dovecot accepts (with APPEND command) messages that begins with 'From[SPACE]' line, which are not valid from RFC 2822 point of view. Additionnally, Dovecot will store them as they are APPENDed, I mean with the starting 'From[SPACE]' line, which generates a bad Maildir format.

The alternative would be to fail the operation completely. I don't see that as very good idea.

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The message is normally in RFC 822 format, starting with a Return-Path line and a Delivered-To line, but it could contain arbitrary binary data. It might not even end with a newline.

Here the "could contain arbitrary binary data" looks to me like there aren't really any restrictions as to what the message could contain, including a From-line at the beginning :).

You could combine both : accepting mails with 'From[SPACE]' and stripping this line while
storing the mail.

Sounds a bit evil to just modify what the user wanted to save.

(And by the way, I should accept Maildir messages with 'From[SPACE]'
at the beginning ;) )

Sounds like a better solution :)