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postfix-users: Re: Patch: support BURL

Re: Patch: support BURL

From: Wietse Venema <wietse_at_nospam>
Date: Sat Apr 10 2010 - 13:19:50 GMT
To: Postfix users <>

Reinaldo etse:de Carvalho:
> That would not explain why sending to an IMAP server is
> faster than sending that same message to an SMTP server.

Reinaldo de Carvalho:
> Send a unique message is faster than send twice (twice for saving on
> IMAP server).

Saving to the IMAP server?

So this is really about sending yourself mail via IMAP, instead of
listing yourself in the Cc: address box.

That saves no bandwidth - instead it reverses a single MTA->IMAP
mail flow into IMAP->MTA, at the cost of another protocol.

There are smarter ways to do this: teach the IMAP server how talk
authenticated SMTP (it can proxy the user's credentials, just like
the MTA can proxy them with BURL). Then, the IMAP server can manage
the entire message composition process instead of relying on BURL