I need a SMTP relay server so out finance software can email users notifications!
I have had a linux box sat in the corner of of server room for about 5 years happily chugging away as our SMTP server.
Last week I noticed that I wasn't getting any emails from my backups and our finance software was sending emails to staff.
It turns out that the power supply on the linux box has packed in and I don't have a spare to replace it.
Is there a way I can use a public SMTP server for this? Is this what other people do? Or is there a quick way i can set up a new SMTP for this purpose?