Hi Sina,
I have a bridge running and since my ISP is changing my IP at least daily, I thought it might be a good idea to set my DynDNS in the torrc file. Is it a good idea? How do I set that?
After you setup your dyndns account, you add Address name.dyndnsdomainname.tld in your torrc, replacing the address name with the hostname, you have chosen in your DynDNS account settings.
For the IP <-> dyndns domain name update/resolution you install and configure one of the DynDNS update clients. I'm using ddclient under Ubuntu*.
Runa told me some time ago, that it is not possible, to combine your bridge with obfsproxy.
*https://help.ubuntu.com/community/DynamicDNS