I've got a personal firewall running on my Mac (Little Snitch) and for the past couple of days, periodically, it's telling me that something is trying to connect via SMPT – but it does not tell me what is trying to connect.
I know it's none of my normal apps, as they all have rules to allow or disallow them already.
I've been denying the requests but want to find out what is trying to send an e-mail. It concerns me and makes me think it's something nasty!
Any ideas on what I can do to identify the source and see what it's trying to send?