What happens if the server goes down?

Asked by Network Technology • Oct 18, 2026

Question from the article "Zimbra vs Microsoft 365 — self-hosted mail server or cloud subscription".

Answers

Network Technology • Staff Oct 18, 2026 12:57

Emails sent to you while the server is down are held by the sending server and delivered when yours recovers — typically up to 5 days. With 24/7 monitoring we react before there is a real problem.

More in the article: https://ntg.bg/en/blog/zimbra-vs-microsoft-365