/usr/share/gosa/plugins/personal/ is in gosa-plugin-mail 2.7.4+reloaded3-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gosa/plugins/personal/mail/
/usr/share/gosa/plugins/personal/mail/class_mail-methods-cyrus.inc
/usr/share/gosa/plugins/personal/mail/class_mail-methods-sendmail-cyrus.inc
/usr/share/gosa/plugins/personal/mail/class_mail-methods.inc
/usr/share/gosa/plugins/personal/mail/class_mailAccount.inc
/usr/share/gosa/plugins/personal/mail/copypaste.tpl
/usr/share/gosa/plugins/personal/mail/generic.tpl
/usr/share/gosa/plugins/personal/mail/mailAddressSelect/
/usr/share/gosa/plugins/personal/mail/mailAddressSelect/class_mailAddressSelect.inc
/usr/share/gosa/plugins/personal/mail/mailAddressSelect/selectMailAddress-filter.xml
/usr/share/gosa/plugins/personal/mail/mailAddressSelect/selectMailAddress-list.tpl
/usr/share/gosa/plugins/personal/mail/mailAddressSelect/selectMailAddress-list.xml
/usr/share/gosa/plugins/personal/mail/sieve/
/usr/share/gosa/plugins/personal/mail/sieve/class_My_Parser.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_My_Scanner.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_My_Tree.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_parser.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_scanner.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_semantics.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieve.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Block_End.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Block_Start.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Comment.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Discard.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Else_Elsif.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Fileinto.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_If.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Keep.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Redirect.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Reject.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Require.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Stop.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveElement_Vacation.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_sieveManagement.inc
/usr/share/gosa/plugins/personal/mail/sieve/class_tree.inc
/usr/share/gosa/plugins/personal/mail/sieve/libsieve.inc
/usr/share/gosa/plugins/personal/mail/sieve/templates/
/usr/share/gosa/plugins/personal/mail/sieve/templates/add_element.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/block_indent_start.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/block_indent_stop.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/create_script.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/edit_frame_base.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_address.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_allof.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_anyof.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_block_end.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_block_start.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_boolean.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_comment.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_discard.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_else.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_elsif.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_envelope.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_exists.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_fileinto.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_header.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_if.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_keep.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_redirect.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_reject.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_require.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_size.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_stop.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/element_vacation.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/import_script.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/management.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/object_container.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/object_container_clear.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/object_test_container.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/remove_script.tpl
/usr/share/gosa/plugins/personal/mail/sieve/templates/select_test_type.tpl