Mimecast

Minimal guidance for messy support realities.

Mimecast synchronized user offboarded in Microsoft 365 but still receives policy notices

Issue Summary

This article covers a Mimecast email-security issue where Mimecast synchronized user offboarded in Microsoft 365 but still receives policy notices. Use the path below to confirm scope, separate mail-flow from policy and identity causes, and move from safe user checks into deeper administrative remediation without weakening protection broadly.

Mimecast login protection challenge loops for one executive assistant

Issue Summary

This article covers a Mimecast email-security problem centered on Mimecast login protection challenge loops for one executive assistant. Use the path below to verify symptoms, identify whether the break is policy, routing, quarantine, identity, or integration related, and escalate cleanly if standard repair steps do not hold.

Mimecast URL allow policy fixes browser clicks but Safe Links still blocks Teams preview

Issue Summary

This article covers a Mimecast email-security issue where Mimecast URL allow policy fixes browser clicks but Safe Links still blocks Teams preview. Use the path below to confirm scope, separate mail-flow from policy and identity causes, and move from safe user checks into deeper administrative remediation without weakening protection broadly.

Mimecast attachment sandbox verdict disagrees with Defender verdict on same file

Issue Summary

This article covers a Mimecast email-security issue where Mimecast attachment sandbox verdict disagrees with Defender verdict on same file. Use the path below to confirm scope, separate mail-flow from policy and identity causes, and move from safe user checks into deeper administrative remediation without weakening protection broadly.

Mimecast policy bypass for copier mail also weakens phishing checks

Issue Summary

This article covers a Mimecast email-security problem centered on Mimecast policy bypass for copier mail also weakens phishing checks. Use the path below to verify symptoms, identify whether the break is policy, routing, quarantine, identity, or integration related, and escalate cleanly if standard repair steps do not hold.

Mimecast targetted threat protection rewrites QR-code phish but users still scan screenshots

Issue Summary

This article covers a Mimecast email-security issue where Mimecast targetted threat protection rewrites QR-code phish but users still scan screenshots. Use the path below to confirm scope, separate mail-flow from policy and identity causes, and move from safe user checks into deeper administrative remediation without weakening protection broadly.

Mimecast mailbox continuity login works but sent items never appear

Issue Summary

This article covers a Mimecast email-security issue where Mimecast mailbox continuity login works but sent items never appear. Use the path below to confirm scope, separate mail-flow from policy and identity causes, and move from safe user checks into deeper administrative remediation without weakening protection broadly.

Mimecast accepted domains configured but brand-new subdomain mail is rejected

Issue Summary

This article covers a Mimecast email-security issue where Mimecast accepted domains configured but brand-new subdomain mail is rejected. Use the path below to confirm scope, separate mail-flow from policy and identity causes, and move from safe user checks into deeper administrative remediation without weakening protection broadly.

Mimecast digest release works for users but admin release silently fails

Issue Summary

This article covers a Mimecast email-security issue where Mimecast digest release works for users but admin release silently fails. Use the path below to confirm scope, separate mail-flow from policy and identity causes, and move from safe user checks into deeper administrative remediation without weakening protection broadly.

Mimecast journaling connector healthy but archive lag grows during peak hours

Issue Summary

This article covers a Mimecast email-security issue where Mimecast journaling connector healthy but archive lag grows during peak hours. Use the path below to confirm scope, separate mail-flow from policy and identity causes, and move from safe user checks into deeper administrative remediation without weakening protection broadly.