I find it quite funny that Gmail seemed to tag mail from Google Reader as spam. To be exact, it tagged a news item I sent to myself using the [x] Send me a copy of this e-mail feature. I don’t think this is the first time Gmail has been marking mail from other Google services as spam, so I guess they really don’t exclude their own services 
This is a somewhat Debian-specific howto for backing up Gmail on Debian using isync, adapted from rectalogic.com’s Automated gmail backup via IMAP article that was directed at Mac OS X users.
It’s always a good idea to keep external system logs in case something happens to your server, for example, if it gets rooted. Privacy issues are a good reason to keep the logs encrypted. This is a quick look at how to send system logs hourly to Gmail (or some other external mail) from a Debian server. It also assumes quite a bit of knowledge from the reader, sorry for that 
It seems Gmail’s forwarding feature does not really forward all mail (true for Apps at least). When you select “Settings->Forwarding and POP/IMAP->Forward a copy of incoming mail to” and set an e-mail there, only the e-mails sent to your literal address (“user@somewhere”) are forwarded. E-mails that were already forwarded to that address or sent with the ‘+’ suffix (eg. “user+tag@somewhere”) are *not* forwarded. You can’t even use filters to achieve this.
This sucks, because when using Apps and regular gmail account you most likely would want to forward a couple of aliases (eg. webmaster) to the main account@domain and then all coming to that to regular gmail. And you can’t use the ‘+’ suffix for the real address. 
Update: Okay, I was too hasty. Looks like the above holds true only for when you send e-mail from your regular gmail account to the Apps one. When sent externally, all mail seems to be forwarded regardless of whether ‘+’ suffix is used or whether it’s sent to the actual account (“user+tag”, “webmaster+tag”, etc. are forwarded).
