Hi
I logged on to my Gmail account this morning, and found that the vacation setting was on. I thought this was strange, as I hadn't set it, so I opened the settings and found that it was set to send some dodgy mail to anyone who wrote to me, inviting them to meet online and sending a link to some pics (obviously, I didn't click this link).
Then I checked my sent messages to see how many people it had been sent to, and found that not only had it been sent to people who wrote to me during the night, but also that a different mail had been sent to a whole list of people whose addresses were all very similar:
pers-(then some letters and numbers)@craigslist.org
The mail said only "heyy, i think we can fill each others ad

" - with no link. One person actually replied to this wanting to meet up!!!
The subjects headings were replies, like "Re: Fun witty guy Looking - 26 (Central Point)" or "Re: anyone real? - 19", suggesting that they might be replies to dating posts.
I do not look at Craigslist.org, and have not looked at any dating posts anywhere.
How has this happened from my email address, and how safe am I now? It seems to be back to normal now.....
Thanks for any advice you can give.
Guy