Category: SMTP
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Capture DMARC Reject Email Copies
Use DMARC to Protect your Email System It is recommended to ensure you have the highest SPF, DKIM, and DMARC email protection for all your email domains. This includes setting the DMARC email protection level to the highest “reject” mode. DMARC “reject” mode will result in rejection for any email sent from your domain name…
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Email Impersonation Protection for Unused Email Domains
Protect Unused Email Domains Against Cyber Attack Organizations usually own a large number of email domains, for brand protection reasons. But only use a subset of those email domains for their mailboxes. It is recommended to protect unused email domains as part of your overall cyber security. Typically any email security measures are only applied…
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Review Older TLS Versions and Cipher Suites
Prepare for TLS 1.3 Support for Mail Transport TLS 1.3 support is becoming prevalent across messaging platforms as we enter 2025. Exchange Online support for TLS 1.3 is due soon – see this TLS 1.3 Blog Post from office365migrate.com . TLS 1.2 is used as the default message transfer protocol, and this has superseded the…
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Prepare for Microsoft Exchange SE | End of Support for Exchange 2016 & 2019
Prepare for Exchange SE RTM Microsoft have announced a set of important dates for end of support for both Exchange 2016 and Exchange 2019, during 2025. The new version of Microsoft Exchange, called Microsoft Exchange SE (Subscription Edition) is being released as RTM in late 2025. Exchange SE CU1 will be released later. We plan…
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DANE DNSSEC for M365 Exchange Online
DANE DNSSEC Email Security Planning Microsoft have released support for DANE and DNSSEC to improve the email security of your M365 registered email domains. DANE with DNSSEC will help protect your email domains against man-in-the-middle attacks. Enable DANE support now to further protect your email system from malicious cyber attack. DANE Definition DANE stands for…