"Email password fails with & in it" is specifically about configuring Exim. As Exim is server-side software and not web-specific I'd think it would fit better on Server Fault.
When trying to flag as off-topic it's marked "too old to migrate". Should we still look at migrating it anyway?
There is no way to migrate questions older than 60 days (even for moderators). Migration is disabled for old questions because:
The only thing that we can suggest is that the user re-asks the question on the other site. If they do so, we could edit a link into the question on this site if they ask for it.
