Yes — I do this all the time. Avid houses sometimes want Quicktime moives in the Avid Meridien codec, sometimes in the Animation codec. If they don’t give you a preference, choose the Animation codec. If that’s too big, consider Photo-JPEG codec at 100%. If that’s too big, use Photo-JPEG at 89% or 94% or so.
Sometimes they like Targa sequences, though. But the post house should have a preference.
Don’t use File>export, by the way … use Composition>Make Movie so you can then use the Render Queue.
But you probably knew that … 🙂
Steve