Hi Mike,
good point, I've modified the sql query with something like:
... WHERE username = '%n' AND domain = CASE '%d' WHEN 'old_domain' THEN
'new_domain' ELSE '%d' END
Now also the old domain is accepted. Only for speculation's sake, I
thought as there are two header fileds in the email, Delivered-To and
To, just rewriting the former in exim would have worked flawlessly for
dovecot and would not have hidden the actual destination address. I
haven't tried this approach though.
Thanks,
Quaquaraqua'
On 07/11/16 10:10, Mike Brudenell wrote:
Greetings -
I guess you can do it in either…
- In Exim it's easy: you would rewrite the address(es) from the old
domain to the new one. Read the chapter on rewriting in the *Exim
Specification*.
- In Dovecot I guess you'd just modify the *password_query* construct to
see if the *domain* was either the old or new domain.
Something to think about is the effect of secretly rewriting the old domain
to new domain in addresses. If you do then, depending which address(es) you
rewrite, recipients might not be able to tell whether someone sent to the
old domain name or the new one, so can't tell the sender to start using
their new address instead.
It depends on whether you plan to run both domains indefinitely, or want to
phase the old one out eventually.
Cheers,
Mike B-)
On 7 November 2016 at 00:35, Quaquaraquà <[email protected]> wrote:
Dear Dovecot and Exim users,
I have a VPS using these two applications. I am transitioning from a
domain_old to a domain_new. I'd like to redirect all the emails from
domain_old to the local mailboxes of users @ domain_new. In exim I've
assumed that it is enough to add domain_old to the list of local domains:
domainlist local_domains = @ : domain_new : domain_old
...
begin routers
...
local_users:
debug_print = "R: local_user for $local_part@$domain"
driver = accept
domains = +local_domains
transport = dovecot_lmtp
cannot_route_message = Unknown user
However in Dovecot I'm checking both the username and the domain to
perform the authentication:
auth_username_format = %Lu
passdb { driver = sql ; }
password_query = SELECT username, domain, password FROM users WHERE
username = '%n' AND domain = '%d'
To have this system to work, I wish some special rule that rewrites the
domain from domain_old to domain_new. But I'm not sure whether this needs
to be done in exim or dovecot and how to add it?
- Quaquaraqua'
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