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