Hello, I see smpt logs are taking considerable space (~7GB for 2 years) in C:\WINNT\system32\LogFiles\SMTPSVC1 I have a simple question - is it safe to simply delete them? Shoud I do something before deleting? Can they be deleted automaticaly after a week or two or a month? 10x

You can delete it or can compress it & archive it to some place if you want track any SMTP/IIS activity of past but I dont think you required it until you are doing troubleshooting on any connectivity issues or tracking. It doesn't delete automatically but you can create a script to compress & copy older than 7 days file to some place for compliance if required or simply delete it & schedulethis script to run everyday/week. You can also disable it: SMTP virtual server properties -> General tab -> uptick enable Extended logging.