[horde] [whups]: Error on transport after changing mail gateway

[Carsten]

Hi,

I am a little lost.
Due to other circumstanzes i am still using horde 5.2.22

A few days ago i have moved my SMTP Relay to another host.
DNS has changed from "mail.SomeDomain.TLD" to "smtp.someDomain.tld".

All the underlying postfix configurations have been updated and all mail 
flows are back online.

Except WHUPS, which is returning such an error on receiving a mail 
through the pipeline:

"....
Command output:                  Fatal Error:                  The 
database configuration is missing.                  In 
/usr/share/php/Horde/Core/Factory/Db.php on line 161 1. 
Horde_Registry::appInit() /usr/bin/whups-mail-filter:77 2. 
Horde_Registry->pushApp() /usr/share/php/Horde/Registry.php:299 3. 
Horde_Registry->_pushAppError() /usr/share/php/Horde/Registry.php:1640
4. Horde_Registry::appInit() /usr/bin/whups-mail-filter:77 5. 
Horde_Registry->pushApp() /usr/share/php/Horde/Registry.php:299 6. 
Horde_Registry->callAppMethod()  /usr/share/php/Horde/Registry.php:1635
7. call_user_func_array() /usr/share/php/Horde/Registry.php:1197 8. 
Horde_Registry_Application->init() 9. Whups_Application->_init() 
/usr/share/php/Horde/Registry/Application.php:117
10. Whups_Factory_Driver->create() 
/var/www/horde/whups/lib/Application.php:55
11. Horde_Core_Factory_Db->create() 
/var/www/horde/whups/lib/Factory/Driver.php:41
12. Horde_Core_Factory_Db->create() 
/usr/share/php/Horde/Core/Factory/Db.php:103
13. Horde_Core_Factory_Db->_createDb() 
/usr/share/php/Horde/Core/Factory/Db.php:1
...."

My knownledge of PHP is limited compared to the depth of this error 
message, but I understand some database related error on this.
There have been no changes to the database itself.
Also the web interface is working as expected -no issue there.

Just the Postfix Transport into "whups-mail-filter" seems to be impacted.

has anybody an idea, how to appoach this?

br
Carsten