> And, you configured the dksign service as a content filter? In that case "postsuper -r ALL" (or postsuper -r queue_id).
Yes and no. the old (centos 4 +postfix 2.whatever it was) **had** dksign configured in that way. Then I got this brand new cento6 server with postfix 2.6.6. While configuring it, I did a mistake: I ran it for an hour or so with the **old** master.cf file, and without dksign. So messages were not relayed because not signed. Then I figured out the mistake and fixed (I think) the master.cf. But the message previously stuck in the queue remained there until this sugggetion of yours. "postsuper -r ALL" worked fine, thanks. So the issue was that those messages had been stucked in a particolar queue that ONLY postsuper can flush, did I get this right? OK. So this seems settled, thanks again. Of course, any comment on the postconf -n output I posted at the beginning of the thread, to improve the setup, is still very welcome, if anybody feels like it! Marco