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Change horde IMAP server

comicmaus

New Pleskian
Hi,
I want to change the IMAP server that horde webmail uses for authentication and from where it fetches all mails. Therefore I tried different changes, all without success. Horde is using localhost for authentication, no matter what I change.

(1) changed /usr/share/psa-horde/imp/config/backends.php:
// IMAP server
$servers['imap'] = array(
...
'hostspec' => 'mymailserver.com',
...
);
(2) created a backends.local.php in /etc/psa-webmail/horde/imp with the same content as in (1)

I hope that anybody has an idea and can point me into the right direction please?
 
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