Why Is my Email Blocked from Sending? Reasons And Quick Fixes



Your email may be blocked from sending when a mail server detects something that looks risky—such as unusually high sending volume, messages that resemble spam or phishing, a poor-reputation IP address, or missing authentication records like SPF, DKIM, or DMARC. Blocks can also occur if your account is compromised, if you’re using a VPN or network previously used for spam, or if the recipient’s server has strict filtering rules. Reviewing your email settings, securing your account, and correcting any domain-authentication issues usually resolves the problem.

1. You Have Exceeded Sending Limits

Many email providers set limits on the number of emails you can send per day or per hour. If you send too many emails in a short period, your provider may temporarily block you from sending more messages.

Solution:

  • Check your email provider’s sending limits.
  • Wait until the limit resets (usually within 24 hours).
  • If you frequently send bulk emails, consider using a dedicated email marketing service.

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