On 25.9.2013, at 2.06, Mark Weaver <mark-cl...@npsl.co.uk> wrote: > I'm trying to use this to test an IMAP server I'm developing (I picked the > nightly up from the link on the wiki page at > http://www.imapwiki.org/ImapTest/Installation). With one client using the > mailbox dovecot-crlf (http://www.dovecot.org/tmp/dovecot-crlf) I get messages > like: > > Error: t...@npsl.co.uk[67]: 1035253882.5041.34.camel@hurina: Header From > changed 'Timo Sirainen <t...@iki.fi> > Timo Sirainen <t...@iki.fi' (len 52) -> 'Timo Sirainen <t...@iki.fi>' (len > 26): * 1 FETCH (UID 2093 FLAGS () BODY ("text" "plain" ("charset" "us-ascii") > NIL NIL "7bit" 913 0) BODY[HEADER.FIELDS (From From Delivered-To) ] "From: > Timo Sirainen <t...@iki.fi> > From: Timo Sirainen <t...@iki.fi> > Delivered-To: dove...@procontrol.fi
Hmm. Interesting question. The issue here is that imaptest requests the From field twice, and you return it twice. Normally clients wouldn't do that, but I think the imaptest is correct here and I think most existing server implementations handle it like imaptest expects. From RFC 3501: HEADER.FIELDS and HEADER.FIELDS.NOT are followed by a list of field-name (as defined in [RFC-2822]) names, and return a subset of the header. Duplicating a From field is no longer a subset of the original header.
