What is Email Spoofing?
Email spoofing is a technique used by attackers to forge the "From" address in emails, making it appear as if the message was sent from your domain. This can harm your reputation and lead to spam or phishing attacks.
To prevent spoofing, you need to configure the following DNS records:
- SPF: Specifies which servers are authorized to send emails for your domain.
- DMARC: Provides instructions for how to handle emails that fail SPF or DKIM checks.
Step-by-Step Guide to Configure SPF and DMARC in MyVesta Panel
1. Access the myVesta Control Panel
Log in to your myVesta control panel and navigate to the DNS section for your domain.
2. Update Your SPF Record
- Locate the existing SPF record in your DNS settings (it will start with v=spf1).
- Edit the record to replace ~all with -all.
Example:
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v=spf1 ip4:192.0.2.0/24 ip6:2001:db8::/32 -allThe -all directive tells mail servers to reject all emails not coming from the listed IPs, offering stricter security than ~all, which only marks them as suspicious.
3. Add a DMARC Record
- In the DNS section, create a new TXT record with the name _dmarc.
- Set the value to:
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v=DMARC1; p=quarantine; sp=none; pct=100;Explanation of the DMARC Record:
- v=DMARC1: Indicates it is a DMARC record.
- p=quarantine: Instructs recipients to quarantine emails that fail DMARC checks.
- sp=none: Specifies no special policy for subdomains.
- pct=100: Ensures the policy is applied to 100% of emails.
4. Save Your Changes
- Save the updated DNS settings.
- Allow up to 24-48 hours for the DNS changes to propagate globally.
Why Are These Changes Important?
- Changing ~all to -all ensures only authorized servers can send emails on behalf of your domain, significantly reducing the risk of spoofing.
- Adding a DMARC record enforces additional policies to manage how failed emails are treated, improving security.
By implementing these settings, you enhance your domain's email security and protect against spoofing attacks.