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69 lines
2.4 KiB
Markdown
69 lines
2.4 KiB
Markdown
# Multiple domains configuration
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## Separate account namespaces
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Given two domains, example.org and example.com. foo@example.org and
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foo@example.com are different and completely independent accounts.
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All changes needed to make it work is to make sure all domains are specified in
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the `$(local_domains)` macro in the main configuration file. Note that you need
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to pick one domain as a "primary" for use in auto-generated messages.
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```
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$(primary_domain) = example.org
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$(local_domains) = $(primary_domain) example.com
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```
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The base configuration is done. You can create accounts using
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both domains in the name, send and receive messages and so on. Do not forget
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to configure corresponding SPF, DMARC and MTA-STS records as was
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recommended in the [introduction tutorial](tutorials/setting-up.md).
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## Single account namespace
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You can configure maddy to only use local part of the email
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as an account identifier instead of the complete email.
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This needs two changes to default configuration:
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```
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storage.imapsql local_mailboxes {
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...
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delivery_map email_localpart
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auth_normalize precis_casefold
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}
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```
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This way, when authenticating as `foxcpp`, it will be mapped to
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`foxcpp` storage account. E.g. you will need to run
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`maddy imap-accts create foxcpp`, without the domain part.
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If you have existing accounts, you will need to rename them.
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Change to `auth_normalize` is necessary so that normalization function
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will not attempt to parse authentication identity as a email.
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When a email is received, `delivery_map email_localpart` will strip
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the domain part before looking up the account. That is,
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`foxcpp@example.org` will be become just `foxcpp`.
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You also need to make `authorize_sender` check (used in `submission` endpoint)
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accept non-email usernames:
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```
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authorize_sender {
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...
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auth_normalize precis_casefold
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user_to_email regexp "(.*)" "$1@$(primary_domain)"
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}
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```
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Note that is would work only if clients use only one domain as sender (`$(primary_domain)`).
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If you want to allow sending from all domains, you need to remove `authorize_sender` check
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altogether since it is not currently supported.
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After that you can create accounts without specifying the domain part:
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```
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maddy imap-acct create foxcpp
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maddy creds create foxcpp
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```
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And authenticate using "foxcpp" in email clients.
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Messages for any foxcpp@* address with a domain in `$(local_domains)`
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will be delivered to that mailbox.
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