```
[15-Jun-2015 10:55:30 Europe/Madrid] [2015-06-15 10:55:30] EXCEPTION: (PhutilProxyException) Error while executing Task ID 198435. {>} (DomainException) Attempt to write to undeclared property PhabricatorMailImplementationPHPMailerAdapter::mailer. at [<phutil>/src/object/Phobject.php:23]
[15-Jun-2015 10:55:30 Europe/Madrid] arcanist(head=master, ref.master=956bfa701c36), phabricator(head=master, ref.master=b95fc8ba5d9f), phutil(head=master, ref.master=3b4da3f33153), sprint(head=master, ref.master=ba0d4c2d46da)
[15-Jun-2015 10:55:30 Europe/Madrid] #0 <#2> Phobject::__set(string, PHPMailer) called at [<phabricator>/src/applications/metamta/adapter/PhabricatorMailImplementationPHPMailerAdapter.php:13]
[15-Jun-2015 10:55:30 Europe/Madrid] #1 <#2> PhabricatorMailImplementationPHPMailerAdapter::__construct()
[15-Jun-2015 10:55:30 Europe/Madrid] #2 <#2> ReflectionClass::newInstance() called at [<phutil>/src/utils/utils.php:671]
[15-Jun-2015 10:55:30 Europe/Madrid] #3 <#2> newv(string, array) called at [<phabricator>/src/infrastructure/env/PhabricatorEnv.php:513]
[15-Jun-2015 10:55:30 Europe/Madrid] #4 <#2> PhabricatorEnv::newObjectFromConfig(string) called at [<phabricator>/src/applications/metamta/storage/PhabricatorMetaMTAMail.php:368]
[15-Jun-2015 10:55:30 Europe/Madrid] #5 <#2> PhabricatorMetaMTAMail::buildDefaultMailer() called at [<phabricator>/src/applications/metamta/storage/PhabricatorMetaMTAMail.php:387]
[15-Jun-2015 10:55:30 Europe/Madrid] #6 <#2> PhabricatorMetaMTAMail::sendNow() called at [<phabricator>/src/applications/metamta/PhabricatorMetaMTAWorker.php:26]
[15-Jun-2015 10:55:30 Europe/Madrid] #7 <#2> PhabricatorMetaMTAWorker::doWork() called at [<phabricator>/src/infrastructure/daemon/workers/PhabricatorWorker.php:91]
[15-Jun-2015 10:55:30 Europe/Madrid] #8 <#2> PhabricatorWorker::executeTask() called at [<phabricator>/src/infrastructure/daemon/workers/storage/PhabricatorWorkerActiveTask.php:162]
[15-Jun-2015 10:55:30 Europe/Madrid] #9 <#2> PhabricatorWorkerActiveTask::executeTask() called at [<phabricator>/src/infrastructure/daemon/workers/PhabricatorTaskmasterDaemon.php:22]
[15-Jun-2015 10:55:30 Europe/Madrid] #10 PhabricatorTaskmasterDaemon::run() called at [<phutil>/src/daemon/PhutilDaemon.php:183]
[15-Jun-2015 10:55:30 Europe/Madrid] #11 PhutilDaemon::execute() called at [<phutil>/scripts/daemon/exec/exec_daemon.php:125]