What Those SMTP Error Codes Mean and Why You Should Care (Season 2 Episode 48)

SMTP codes can be so confusing, especially those SMTP response codes and SMTP error codes like the dreaded SMTP error 550. These are often returned in bounced email, such as “550 Requested action not taken: mailbox unavailable” or “550 5 2 1 mail from refused spam site.” They are in response to SMTP commands that have ‘gone wrong’ between your email server that sent the email, and the receiving email server that is unable to deliver it (or refuses to deliver it) for some reason. But what exactly do they mean? Why should you care and what should you do? And why do we say that SMTP error 550 is dreaded? Prefer to read it instead of listen to it?  Do that here: https://www.isipp.com/blog/what-those-smtp-error-codes-mean-and-why-you-should-care/ The Everything Email Marketing blogcast is provided by Get to the Inbox by ISIPP SuretyMail, the founder of the email deliverability industry. For more information about how we can help you get to the inbox go to GetToTheInbox.com