The professor I am trying to contact has multiple email addresses listed on the department page. I mailed to one and got no response since two weeks; then I mailed to the other and still no response since a week.
I was wondering if he was receiving my emails at all and I decided to check more into the department page and found out that it hasn't been updated for a good 10-15 years. All the student lists refer to people who passed out decades back, and this made me think that the email addresses listed may also be outdated. His recent papers show a different email address, and at this point I am in a bit of a fix, since I don't want to sound rude by pestering him with emails (if he indeed did receive it and chose not to reply) but at the same time I'm not sure if he received them at all.
Would it be good idea to mail him at his most recently used address?