Sorry, but this has NOT been my experience. I just tried that list __last_week__ and __no__ responses, no activity, either. Same with cr.yp.to's list. No. If they worked I'd be there. Here's my question again: The following message appears to have been sent, but in fact never does reach their destination:
[root qmail-send]# tail current
@400000004b87b3d3392cbddc new msg 97881462
@400000004b87b3d3392cc5ac info msg 97881462: bytes 531 from suzieprogrammer@gmail.com qp 23629 uid 508
@400000004b87b3d33b7f700c starting delivery 4: msg 97881462 to remotesuzieprogrammer@gmail.com
@400000004b87b3d33b7f7bc4 status: local 0/10 remote 1/255
@400000004b87b3d4338aec64 delivery 4: success: 209.85.216.35_accepted_message./Remote_host_said:_250_2.0.0_OK_1267184586_6si3416200pxi.53/
Please stop spamming centos mailing list with same question.
As I said line "209.85.216.35_accepted_message./Remote_host_said:_250_2.0.0_OK_1267184586_6si3416200pxi.53/" means that message is delivered to remote smtp server.
It's not your mailserver problem after that.
-- Eero