Will the process of uninstalling and reinstalling postfix and reconfiguring dns help? if so, How should i go about it? I am not sure about the steps involved. I tried doing an smtp test at ...://dnschecker.org/smtp-test-tool.php with a failed result. however, when i configured the smtp from a script installed on the domain. the smtp test was successful and received an email on my gmail account. when i tried the email on my hosted domain it shows message sent and succesful but not landiing in the inbox.