On 2022-08-20 15:13, Eric Wong via lttng-dev wrote:
I'm not sure why b.barracudacentral.org doesn't like my MTA.
I got something similar in my initial message to Simon but
brushed it off thinking it was a fluke, but I just got this
again with Mathieu in the recipient list, as well.
dcvr.yhbt.net was recently forced to get a new IP address,
but DKIM + SPF are set up and it manages to deliver fine to
at least one major email provider:
Reporting-MTA: dns; dcvr.yhbt.net
X-Postfix-Queue-ID: 343331F54E
X-Postfix-Sender: rfc822; normalper...@yhbt.net
Arrival-Date: Sat, 20 Aug 2022 18:51:43 +0000 (UTC)
Final-Recipient: rfc822; mathieu.desnoy...@efficios.com
Original-Recipient: rfc822;mathieu.desnoy...@efficios.com
Action: failed
Status: 5.7.1
Remote-MTA: dns; mail.efficios.com
Diagnostic-Code: smtp; 550 5.7.1 Service unavailable; client [173.255.242.215]
blocked using b.barracudacentral.org
Final-Recipient: rfc822; simon.mar...@efficios.com
Original-Recipient: rfc822;simon.mar...@efficios.com
Action: failed
Status: 5.7.1
Remote-MTA: dns; mail.efficios.com
Diagnostic-Code: smtp; 550 5.7.1 Service unavailable; client [173.255.242.215]
blocked using b.barracudacentral.org
I wonder if any other self-hosters are hitting this problem...
Hi Eric,
The ip address of your mx server (173.255.242.215) is blacklisted at Barracuda
and SORBS, since you mention the address was recently changed this is probably
because of the previous owners. Both of those blacklists should provide ways
to get delisted, this is something I had to handle previously with other
blacklists when setting up a new mx.
A good tool to check the reputation of your mx ip is mxtoolbox.com [1].
I will manually whitelist the address of you mx on our server since I know
it's legitimate but you should have the people managing it look into this
since you'll probably have issues with other servers.
Hope this helps, cheers,
Michael
[1]
https://mxtoolbox.com/SuperTool.aspx?action=blacklist%3ayhbt.net&run=toolpage
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