[Dovecot] Envelope From changed - why?

Timo Sirainen tss at iki.fi
Tue Apr 27 23:44:07 EEST 2004


On Tue, 2004-04-27 at 23:25, Amelia A Lewis wrote:
> There's the problem.  IMAP can work between multiple servers (I do it every
> day, partly to keep my Important Email backed up).  The protocol, which
> defines the COPY command, doesn't have a place for a "From " line, since it
> isn't a header.  So, if dovecot implements it, then there are four
> possibilities:
> 
> 1) IMAP COPY from serverA (dovecot) to serverA (dovecot)
> 2) IMAP COPY from serverA (dovecot) to serverB (dovecot)
> 3) IMAP COPY from serverA (dovecot) to serverC (not-dovecot)
> 4) IMAP COPY from serverC (not-dovecot) to ServerA (or B) (dovecot)

2-4 cases aren't COPY commands, it's client which does FETCH to serverA
and APPEND to serverB. Unless you mean some kind of clustered server
setup such as Cyrus Murder, but that doesn't have much to do with
standard IMAP anymore.

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