In magento installed extensions SMTP Pro. When adding a feedback form does not send a letter. Gives an error message:

Unable to submit your request. Please try again later

I clean extensions - the form works. What could be the problem?

    1 answer 1

    And all the other letters are sent?

    If not, then you need to properly configure the module so that when "selftes" checking everything is ok and a test letter arrives, just to solve the problem you need to look in the logs rather there is something useful written that will help solve this problem.