[Xymon] Mailing list

I am currently signed up to the mailing lists with a gmail address which my company have now blocked. I?m trying to sign up with my work address but when I click ?subscribe? on https://lists.xymon.com/mailman/listinfo/xymon it goes to https://lists.xymon.com/mailman/subscribe/xymon which gives a 404 error.

I also can't change my Email through the online form as that also fails and if I email the mailman at xymon.com email address listed I get an undeliverable.

Does anyone know how I can change my registered email address?