Category
Legal requirements that affect deliverability and sending practices.
1312 posts
Resolve the 'missing version field in DNS' error for DKIM. Learn how to fix domainkey configuration, avoid deliverability issues, and verify your setup.
Understand why DKIM's q=dns parameter is critical for email authentication compliance. Learn how it affects deliverability and how MailTester helps verify.
Prevent DMARC failures caused by DKIM's c=simple signing. Learn how to verify DKIM alignment and fix alignment issues with real tools like MailTester.
Learn the real-world best practices for DMARC ruf tag reporting URI setup using HTTP vs HTTPS.
Fix the common DMARC misconfiguration where the rua tag uses an invalid mailto URI. Prevent email delivery failures and improve spam filter compliance.
Ensure your email display names comply with RFC 5322 for non-ASCII characters. Avoid rendering issues, deliverability issues, and client rejection with.
Fix SPF record IPv6 prefix mismatches that harm deliverability. Use real-time verification to detect and correct DNS misconfigurations before emails fail.
Fix the List-Unsubscribe header not found error to improve inbox placement and reduce bounces.
Stop DMARC alignment failures caused by malformed display names with embedded HTML. Learn how to verify and fix email headers before sending.
SHA-1 is deprecated in DKIM due to cryptographic weaknesses. Learn how it causes signature failures and what to do. Verify your email lists with accuracy.
Resolve DMARC alignment issues caused by HTML tags in From header display names. Use real-time email verification to catch problems before they affect.
Verify if your sender IP is allowed by receiving servers with real-time inbox-testing. Avoid bounces and blocklists. Test with MailTester today.
