Host status down - auto retry delivery

[justinus.budi]

Our customer's internal domain host is down. We use SMTP routing to communicate with the Exchange server. I want to know: will IronPort automatically retry delivery when the host status is marked as down?

[Ken Stieers · Accepted solution]

By default it will queue the mail for 72 hours and retry periodically. Eventually it will bounce the mail if it can't deliver it.

https://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/118410-technote-esa-00.html