How to Tackle the “Security or Policy Settings have rejected your message” error

In email communication, the last thing you want is a roadblock preventing your messages from reaching their destination. Enter the vexing ‘Security or Policy Settings Have Rejected Your Message’ error – a frustrating obstacle that can perplex you. But fret not, as this article is your compass to navigate this issue. 

We’ll unravel its complexities and provide actionable solutions, ensuring your emails flow smoothly once again. Let’s get started on unraveling this email enigma.

How to Tackle the "Security or Policy Settings have rejected your message" error |

Why is my Outlook mail being rejected by the server?

Many different reasons can lead to an email being rejected, and this message is just the server’s way of letting you know that something has gone wrong. Let’s look at some common reasons your email might be rejected:

1. Privacy policy, content restriction:

If your email contains keywords that the system considers suspicious or dangerous such as keywords that appear to be spam, phishing phrases, or attachments that may contain malware, your email may be rejected.

2. Problems with attachments:

Attachments are an integral part of email but can also cause problems. If you send a file that is larger than the email server’s limit, or if you send a file type that the server doesn’t accept (such as an .exe file), your email may be rejected.

3. Problem with email authentication:

Technologies such as SPF, DKIM, and DMARC are used to authenticate and prevent email spoofing. It may be accepted if your email passes these checks due to incorrect settings or differences with DNS records.

4. Blacklisted IP or domain name:

If the IP address of your email server or domain is blacklisted due to previous spamming or suspicious behavior, email from that IP or domain may be rejected.

5. Spam filtering process:

Some email servers apply very strict spam filters and may reject emails they consider untrusted, even if they are not spam.

6. High email delivery rate:

If you send a large amount of email quickly, some servers may temporarily reject your email as spam.

How to Tackle the “Security or Policy Settings have rejected your message” error

1.    Check email content and subject:

Avoid using common keywords in spam emails. Make sure your email content and subject line are professional and not misleading.

Spam emails often contain specific keywords that email servers and spam filters use to identify and filter. Here are some common keywords and phrases in spam emails:

Finance and make money:

“Active account”

“Make Money Fast”

“Investment Opportunities”

“Transfer money”


“Advertising Earnings”

“You’ve won a prize!”

Medicines and health:

“Weight Loss Pills”



“Health care”

“Order Now”

Invitations and advertisements:

“Order Now”

“Free of charge”



“Limited time”

“You are eligible”

Confidentiality and privacy:

“Your Account Information”

“Your password”

“Confirm information”

Foreign languages and spelling errors:

Emails contain a large amount of spelling or grammatical errors.

Use a foreign language that is not the recipient’s default or expected language.

Warnings and threats:

“Final Warning”

“Your account has been temporarily locked”

“Act Now”

Unreasonable requests:

“Send money”

“Enter personal information”

“Share Password”

Note: While avoiding these keywords can help your emails avoid spam filters, ensuring quality content and proper use is the most important factor in sending and receiving your emails.

2. Check attachments:

Make sure you only send manageable files. Avoid sending potentially risky file types, such as software files ending in “.exe”. Use Google Drive instead of email to share files.

3. Check and update DNS records:

Ensure you have the correct SPF, DKIM, and DMARC records.

4. Check IP and domain name:

Use online tools to check if your IP or domain is blacklisted. If so, follow the blacklist removal request process. Go to a website like or search for “What is my IP” on Google.

For Windows users, open Command Prompt and enter the command ipconfig. Your IP address will be displayed under “IPv4 Address”. Here are the steps:

Step 1: Use the Windows + R key combination > Type “cmd” > Select OK.

How to Tackle the "Security or Policy Settings have rejected your message" error |

Step 2: Enter the ipconfig command to see the IP address

Finish opening Command Prompt > Enter ipconfig command > Press Enter.

How to Tackle the "Security or Policy Settings have rejected your message" error |

Step 3: Go to this blacklist-testing website and enter the IP address or domain name you want to check.

How to Tackle the "Security or Policy Settings have rejected your message" error |

5.    Reduce send rate:

If you send a large amount of email, consider using a professional email service or increasing an authentication system.

6.    Contact your email service provider:

If you are unsure of the cause or cannot resolve the issue, contact your email service provider for assistance.

Remember that fixing can take time, especially if you need to contact a third party or email service provider. Be patient and test the solutions individually to find the specific cause and how to fix it effectively.

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