On 21/05/2020 21:14, Ashley Dixon wrote:
Hello,
I am attempting to set up sub-addressing on my Courier mail server, allowing
senders to directly deliver messages to a particular folder in my mailbox. For
example, I want to provide my University with the address
`[email protected]` to force all their messages into the
"AcademicMatters" subdirectory.
Unfortunately, I can't find any official Courier documentation regarding
sub-addressing. I have found [1], however I'm not sure it will apply as I am
using virtual mailboxes.
If I understand what you are attempting correctly (not a given!) then
what you are trying won't work. You're confusing multiple *folders* with
multiple *users*.
I'm probably not describing this right, but let's say you've got a small
business, with a POP3 email account of "[email protected]". However,
you've set up a central server with each user having their own account
eg John, Mary & Sue.
So you configure Sue's mail client to have an address of "Sue
<[email protected]>". Out in the internet, smtp servers look at the
@isp.co.uk bit to deliver it to the right mailserver. Your ISP sees
"sue+business", *ignores* the bit in front of the plus, and puts it in
the "business" pop account. Your local mailserver now pulls down the
email, ignores the bit *after* the +, and shoves it in Sue's email.
This is, I believe, an RFC so Courier is simply implementing the spec.
That's probably why there is precious little Courier reference material,
it assumes you have the RFC to hand ...
I don't know what happens with your "-" example, but it just looks wrong
to me. It should be looking for an AcademicMatters POP account, and then
delivering the mail to a user account called ash on the server called
AcademicMatters. Internet email addresses and domains are read
right-to-left (Janet used to be left-to-right, but the Americans won, as
usual).
Cheers,
Wol
