want to trace when mail sent to DL or last time it was used

[santhuwhity]

wants to trace when was XYZ DL used (mail sent to it or last time it was used)

[#2]

Please provide extra information, such as what Exchange Version you are using
is it on cloud or on prem.
what is the version also if on prem

[#3]

@farismalaeb using office365

[#4 · Accepted solution]

have you tried Exchange Admin Center \ MailFlow \ Message Trace
https://admin.exchange.microsoft.com/#/messagetrace
also, you can use
Get-MessageTrace -SenderAddress MyDLGroup@MyDomain.com | Get-MessageTraceDetail