Hi all. I am not sure if anyone have this issue when using Outlook to check emails on a mailserver running Postfix. I am having weird complaints from my email users about missing emails sent to them. Apparently, some of my email users have been complaining that they have people calling up to ask why no one is responding to their emails. Based on the email address of the sender and time/date given, I managed to locate the inbound email logs and when I checked our mail user's inbox folders, ie. cur/, the email is there. However, when I check from their Outlook, no such emails exist in any of the Outlook folders. Yes, I checked everywhere, even the SPAM folders and the email is missing. Does anyone have any insight as to why this is happening?