Hi,
Yes this is possible with the passdb_username_filter
([1]https://doc.dovecot.org/2.4.2/core/config/auth/passdb.html#passdb_username_filter)
So if you've got one passdb for example.com and another one for every
other domain you would do something like:
```
passdb {
driver = ...
args = ...
...
username_filter = *@example.com # to skip this passdb for other domains
result_succes=return-ok # to skip later passdbs
result_fail=return-fail # again to not ask later passdbs if auth failed
}
passdb {
# passdb for other domains
....
}
```
(this configuration example is for 2.3 and needs to be adapted for 2.4)
Kind regards,
Markus
On 11/11/25 18:14, lejeczek via dovecot wrote:
Hi guys.
Is it possible to tell dovecot to authenticate with a specific back-end
for a given domain?
If it would not the only back-end a given account of a specific domain
would try, then it would be the first back-end such account would try to
auth against - possible?
many thanks, L.
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References
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1.
https://doc.dovecot.org/2.4.2/core/config/auth/passdb.html#passdb_username_filter
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