in ASM (e.g. v14) go to Security/Reporting/Reporting Settings/SMTP Configuration for Reports Export -> click on Create button and fill out the SMTP Configuration form, then the next Create button does not work! a bug in F5 UI?
...and here is the answer! - this looks like a bug, so a workaround is to create the SMTP configuration from the System menu (System/Configuration/Device/SMTP/+), after that it will appear in ASM Reporting and can be used inside ASM: