[Typo3] Differentiated formmail recipients conflicts with Login User Tracking

[Daniel Doesburg]

Hi list,

I used without any problem the Differentiated formmail recipients extension.
Works perfect.
Until . . .
I installed the Login User Tracking.
This extension also works very nice.
But the first extension stopped.
I mean that no emails are send except one.
And this one gives the next error:

<recipient at whatever.com>:
Sorry, I couldn't find a mail exchanger or IP address. (#5.4.4)

Yes, literaly "recipient at whatever.com". I don't know where that comes from.

Also is there a php error because all recipients are disappeared in a 
black hole.

Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL 
result resource in 
../typo3conf/ext/julle_diffformmailrcp/class.ux_t3lib_formmail.php on 
line 118

Warning: Cannot modify header information - headers already sent by 
(output started at 
../typo3conf/ext/julle_diffformmailrcp/class.ux_t3lib_formmail.php:118) 
in ../typo3_src-3.7.0/typo3/sysext/cms/tslib/class.tslib_fe.php on line 2402


What can be a reason, or, more importent, what can be a solution?


Regards,

Daniel