we have a distribution group that have around 1,500 recipients. when someone sends an email to this group, it takes an abnormally long time for us to receive the email like more than 10 minutes from the time the email was sent.
when i received the complaint that the email seems to be stuck somewhere, i checked the queue but found nothing lined up there.
a bit of background, this master distribution group consists of several sub-distribution groups.
is there like a maximum or saturation limit to a distribution group that causes this much delay?