Possible to Whitelist one e-mail account checking for mail

[cybersalt]

I have a client who has some mysterious old e-mail reference somewhere on their devices or on my server that is continuously looking for mail and being denied access and they keep getting blocked whenever their ip address changes as they travel.

Is it possible to configure CSF to ignore any time "mysteryaddress@domain.com" tries to connect for mail from any ip?

I normally do not like turning up the music to drown out a noise I can't fix, but I've exhausted what I've known to search for / look at and even what I've learned to look at.

Thanks for your time!

Tim

[sawbuck]

Not that I'm aware of - only by IP.