Hello Janos,

i tried this and set CUSTOM_PRE_AUTH_FUNCTION as described in the docs.
For testing reasons i copied your "my_imap"-script into config-site.php.

After this tried to log into piler with different users but the login page is shown as acompletely blank page. Disabling the script, which is mentioned in the docs, login page is shown correctly.

I changes domain values to my domains but this error persists.

Can you help me with this?


Am 29.10.19 um 20:20 schrieb s...@acts.hu:


I've just updated the custom authentication docs at

Please check out the CUSTOM_PRE_AUTH_FUNCTION feature at the end.


On 2019-10-29 10:12, BKH - Post wrote:
Hi @all,

is there a possibility to establish an authentication against multiple
IMAP servers?
Having here a scenario with two to three internal IMAP servers in
different workgroups i don't want to setup three mailpiler instances.
In fact that setting setting up such system is not a problem i want to
reduce administrative tasks.

Thanks for your advice.



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