Exchange send report need edb log file？

Question

I have an Exchange server, but I keep a large number of log files, and now I want to reduce these log files, I think of enabling circular log, but I have a question, that is, I usually use the delivery report to check some historical emails, if I enable circular log, will I be unable to query historical emails. Or are there other efficient ways to reduce storage on Exchange servers (third-party backup servers may not be allowed)?

Answer 1

Enabling circular logging will not prevent you from querying historical emails in Exchange Server. Here's why:

• Only log files are impacted by circular logging; mailbox data is not. When the allotted space is filled, it automatically overwrites earlier logs, retaining only the most current ones.
• Mailbox Delivery Reports (MDRs) are distinct databases that hold delivery reports, which are used to monitor the progress of email deliveries. Circular logging is not affecting these databases on the server.

For more information - How to deal with Large Exchange log files

Please Note: Since the web sites are not hosted by Microsoft, the links may change without notice. Microsoft does not guarantee the accuracy of this information.

Answer 2

Yes, Exchange uses circular logging to limit the message tracking log based on file size and file age to help control the hard disk space that's used by the log files.

You could refer to this article:

How to Cleanup, Truncate or Move Log Files in Exchange Server 2013/2016/2019? | Windows OS Hub (woshub.com)

In this article, we’ll look at different ways for cleaning, truncating and moving log files in Exchange Server 2013/2016/2019.

 Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.