[Mailman-Users] 4.3.0 mail transport unavailable

[Conrad G T Yoder]

I have recently (last couple weeks?) started getting "4.3.0 mail transport unavailable” bounces from roadrunner/TW addresses (the rate-limiting issue is not currently rearing its head), and that is causing Mailman (2.1.17) subscriptions to be disabled.  Example error message in the “Bounce action notification” email:



Reporting-MTA: dns; zapata.dreamhost.com
X-Postfix-Queue-ID: B6D6B8DB0B72
X-Postfix-Sender: rfc822; neohiopal-bounces at lists.neohiopal.org
Arrival-Date: Mon,  9 Jun 2014 05:15:45 -0700 (PDT)

Final-Recipient: rfc822; foo at roadrunner.com
Original-Recipient: rfc822;foo at roadrunner.com
Action: failed
Status: 4.3.0
Diagnostic-Code: X-Postfix; mail transport unavailable



From googling it appears this is may be a Postfix problem?   Any one else seeing this with roadrunner/time warner?

-Conrad

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