You have reached your message limit / XX emails were sent yesterday

You get this message when more mail has been sent in one day than your package's limit allows:

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: example@emailaddress.com You (accountname) have reached your message limit.

Or, the next day: XX emails have been sent yesterday by accountname. Sometimes it only says Unrouteable address or Mail delivery failed: returning message to sender.

The counter resets to zero every night, so you can send mail again a day later. Mail that was rejected isn't automatically resent, so send important messages again yourself.

Why is there a limit?

Spammers often try to send mail through someone else's account, for example with a stolen password or through a form on a website. A daily limit helps us limit the damage. By default, the limit is 300 emails per day per package, for all your mailboxes, webmail and your website combined. Read Limit for sending mail.

Check whether you sent the mail yourself

In DirectAdmin, go to Email Accounts and click Email Usage. There you can see which emails were sent and from which mailbox. If you don't recognise them, change the password of that mailbox right away and contact us. Also read Mailbox hijacked or spam from your address: how to clean up.

A lower or higher limit

Is your limit lower than normal, for example 50? Then it was lowered earlier after abuse. Once the problem is solved, ask us to restore the normal limit. If you really need more, contact us. For newsletters, it's better to use a newsletter service.

See also in the DirectAdmin manual: What to do if your email address has been abused.

Detailed explanation with screenshots: Sending limits and the 'message limit reached' message in the DirectAdmin manual.