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Domain has exceeded the max defers and failures per hour allowed message

If you receive a message that looks like this:

"Domain has exceeded the max defers and failures per hour (8/10 (80%)) allowed. Message discarded."

That means - at least 70% of the emails you sent out during the past 60 minutes were addressed to invalid or mis-typed or non-existent recipients. (Or in some cases, even recipients that have blocked messages from you). IT CAN ALSO RESULT FROM HAVING A FORWARDER SET TO ANOTHER EMAIL SERVICE AND RECEIVING TOO MUCH SPAM - for example; if you have a Forwarder to Gmail and you get too much spam, Gmail will think it's your domain sending spam and reject (defer) your messages back to the server here which triggers this event.

This is one of the important security functions of our mail serversit's main purpose is to help prevent spam attacks from your account when, for example, if your password were to be compromised or an infection on your computer attempts to send out a bunch of spam without your knowledge.  

If more than 70% of the emails you send out within a 60 minute period are rejected by their destination, then the mail server will send you that alert and prevent mail from being sent to and from your account for the remainder of that 60 minute period.

EXAMPLES OF HOW THIS CAN HAPPEN:

First example - if you send out an email to 10 recipients and 8 of those bounce back to the server due to 8 of the recipient addresses being non-existent, the server detects that more than 70% of your outgoing emails are to bad recipients and it will trigger this security feature, and you won't be able to use email on the domain for 60 minutes (unless you contact us to have the block manually removed).

If you are encountering this in a scenario where you've sent a message to a group of people then you know it's time to clean-up your contacts list and weed-out the invalid recipients whose email addresses no longer exist.

Second example - if you have created a Forwarder email address that is forwarding to an external account that you have at another host or service such as your Internet Service Provider or a Free Webmail Service or other host, and the address that you have forwarded is generating a large amount of bounced emails (such as, from attempting to send out larger number of mailers), then the service you have Forwarded email will likely "defer" those messages or "fail" them, sending a signal back to your mail server here which can trigger the max defers and/or failures limit.

If you trigger max defers, users who send you messages during the remaining minutes of the 60 minute period will also receive their message to you bounced back to them.

IMPORTANT NOTE 1 - IF YOU HAVE A FORWARDER SET UP TO POINT TO A GMAIL ACCOUNT AND YOU RECEIVE A LOT OF SPAM TO THAT FORWARDER, THEN YOU WILL LIKELY TRIGGER THE MAX DEFERS / FAILURES FREQUENTLY BECAUSE GMAIL IS REJECTING THOSE MESSAGES BACK TO YOUR DOMAIN.

IMPORTANT NOTE 2 - IF YOU ARE SENDING MESSAGES TO EMAIL RECIPIENTS / ADDRESSES THAT ARE NOT VALID (outdated addresses that don't exist, addresses with typographical errors in them) THAT TOO WILL TRIGGER THE MAX DEFERS / FAILURES LIMIT. TRY REMOVING OUTDATED CONTACTS FROM YOUR ADDRESS BOOK.

Another important thing to take into consideration - since we do not allow bulk promotional mailings here (to help prevent our mail servers from being blocked by other ISP's), if you have a need to send out mailers to large numbers of recipients on a regular basis,  you should definitely check into one of the many mailing list / newsletter solution providers out there. The one we currently recommend most is http://www.ymlp.com since they offer a free service that is extremely easy to use and feature-rich. In fact, using ymlp.com to set up your mailers and newsletters will also automatically detect any non-existent recipients / bad email addresses in your list and report them to you so that you can remove them from your list!

IN ALL CASES - If you receive that warning message and you have not sent out the emails, then you should contact us immediately to try to determine the source of the problem.




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