Email Security Best Practices-DMARC with SPF DKIM

Email Security Best Practices-DMARC with SPF DKIM

Best way to prevent server IP blacklist for outgoing spamming control,

 

Email Security Best Practices-DMARC with SPF DKIM

 

Outgoing email to an email server around, DMARC, rDNS, SPF, DKIM, always external security to protect mail system,

SPF and SenderID

Sender Policy Framework (SPF) is an e-mail verification method, using a spoofing system is designed to prevent unwanted email. SPF to verify the source IP of the email content is being compared with a DNS TXT record. Genrate SPF Record.

How to send mail from zimbra command line

 

 Example: IN TXT  "v=spf1 mx -all"

 

Dkim

Identify the domains Mail (DKIM), domain name email and email associate a person or company to assume responsibility is a method to allow.

Email Security Best Practices-DMARC with SPF DKIM
Email Security Best Practices-DMARC with SPF DKIM
Example: 4BA05AC4-2C77-11E6-zcghxhghxxxxx._domainkey IN  TXT    ( "v=DKIM1; k=rsa; " "p=MIGfMA0GCSqGSIIen8X6HghbjAI6Ghxgw/S4FNOlTGilxb7tySoShPjkEe/j9EygqfLxiL5U65FiYxR9sUMiVX+8C68+tVqVp6jhR7UUS3/jtQIDAQAB" )

 

DMARC

 

DMARC is the best way to protect your email traffic against phishing and other fraudulent activity: Create DMARC Record

DMARC

Example:.IN TXT  "v=DMARC1; p=none; sp=none; ruf=mailto:forensic-report@knowledgelinux.com; rua=mailto:feedback-info@knowledgelinux.com;fo=1; rf=afrf; pct=100; ri=86400"

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