Aqua and wyndhy, generally I "sign off" with "No worries" or something like that. I try not to keep things too formal - we are a local company after all, and a lot of customers open with "G'day mate, I'm having a problem with..." One thing I have noticed is that when I talk to the security team of our upstream provider (a mega multinational telco-zilla) is that they are extremely formal, to the point where it actually makes me uncomfortable I'm not sure whether that's an international cultural thing (they're American) or a mega-corporate cultural thing.

I keep working on it all the time, though

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