Alignment
Alignment
- April 23, 2021
- Posted by: Nicola Selenu

When three header fields (From, ReturnPath(SPF), DKIM d=) in an email are matching, proving it is a trustworthy email coming from where it’s supposed to be coming from. Strict alignment matches exactly; relaxed alignment matches on the organizational domain level with a combination of the primary/subdomains. See DKIM Alignment, DMARC Alignment, SPF Alignment.
Author:Nicola Selenu
Email Service Providers Handbook
The most comprehensive “Handbook of Email Service Providers“!
SPAMASSASSIN RULES
All SpamAssassin rules in one place, EXPLAINED!
SMTP COMMANDS
& REPLY CODES
All SMTP/ESMTP commands and reply codes in one place, EXPLAINED!
Free DNS Tool
Check the DNS records of your domain with our free DNS tool.
Deliverability Glossary
The most comprehensive Email Deliverability and Marketing Glossary!
- Term: Organizational Domain
- Term: DMARC Alignment
- Term: DKIM alignment
- Term: Alignment
- Term: Header
- Term: Sender Policy Framework (SPF)
- Term: DomainKeys Identified Mail (DKIM)
- Term: Email Service Provider (ESP)
- Term: Deliverability
- Term: SpamAssassin
- Term: Extended Simple Mail Transfer Protocol (ESMTP)
- Term: Simple Mail Transfer Protocol (SMTP)
- Term: Domain Name System (DNS)
Alignment
When three header fields (From, ReturnPath(SPF), DKIM d=) in an email are matching, proving it is a trustworthy email coming from where it’s supposed to be coming from. Strict alignment matches exactly; relaxed alignment matches on the organizational domain level with a combination of the primary/subdomains. See DKIM Alignment, DMARC Alignment, SPF Alignment.
- Term: Organizational Domain
- Term: DMARC Alignment
- Term: DKIM alignment
- Term: Alignment
- Term: Header
- Term: Sender Policy Framework (SPF)
- Term: DomainKeys Identified Mail (DKIM)
- Term: Email Service Provider (ESP)
- Term: Deliverability
- Term: SpamAssassin
- Term: Extended Simple Mail Transfer Protocol (ESMTP)
- Term: Simple Mail Transfer Protocol (SMTP)
- Term: Domain Name System (DNS)
- Term: Domain Message Authentication Reporting & Conformance (DMARC)
Author:Nicola Selenu
Email Service Providers Handbook
The most comprehensive “Handbook of Email Service Providers“!
SPAMASSASSIN RULES
All SpamAssassin rules in one place, EXPLAINED!
SMTP COMMANDS
& REPLY CODES
All SMTP/ESMTP commands and reply codes in one place, EXPLAINED!
Free DNS Tool
Check the DNS records of your domain with our free DNS tool.
Deliverability Glossary
The most comprehensive Email Deliverability and Marketing Glossary!
- Term: Organizational Domain
- Term: DMARC Alignment
- Term: DKIM alignment
- Term: Alignment
- Term: Header
- Term: Sender Policy Framework (SPF)
- Term: DomainKeys Identified Mail (DKIM)
- Term: Email Service Provider (ESP)
- Term: Deliverability
- Term: SpamAssassin
- Term: Extended Simple Mail Transfer Protocol (ESMTP)
- Term: Simple Mail Transfer Protocol (SMTP)
- Term: Domain Name System (DNS)
- Term: Domain Message Authentication Reporting & Conformance (DMARC)