Run the following statement:
SELECT *
FROM `core_config_data`
WHERE `path` LIKE '%email%'
LIMIT 0 , 30
You can basically edit the values there. The main ones you'll want to look at are:
trans_email/ident_general/email,
trans_email/ident_salse/email, and
trans_email/ident_support/email
P.S.
I don't get an error when validating that email address in 1.7.0.2, you could try a local override of the following Model:
app/code/core/Mage/Adminhtml/Model/System/Config/backend/Email/Address.php from:
protected function _beforeSave()
{
$value = $this->getValue();
if (!Zend_Validate::is($value, 'EmailAddress')) {
Mage::throwException(Mage::helper('adminhtml')->__('Invalid email address "%s".', $value));
}
return $this;
}
to
protected function _beforeSave()
{
$value = $this->getValue();
/*if (!Zend_Validate::is($value, 'EmailAddress')) {
Mage::throwException(Mage::helper('adminhtml')->__('Invalid email address "%s".', $value));
}*/
return $this;
}
This basically bypasses the validation process.