Sujet : Re: reverse lookup validation failed - how do I fix this?
De : INVALID_NO_CC_REMOVE_IF_YOU_DO_NOT_POST_ml+sendmail(-no-copies-please) (at) *nospam* esmtp.org (Claus Aßmann)
Groupes : news.software.nntpDate : 31. Mar 2025, 09:58:28
Autres entêtes
Organisation : MGT Consulting
Message-ID : <vsdlfk$f73$1@news.misty.com>
References : 1
User-Agent : trn 4.0-test77 (Sep 1, 2010)
Nigel Reed wrote:
Mar 31 02:01:39 newsfeed nnrpd[3339866]: ? reverse lookup for
2001:41d0:a:280::1 failed: reverse lookup validation failed -- using IP
address for access
Interestingly, news.nntp4.net does not resolve back to that IP, it uses
2001:41d0:700:1273::
That's probably why the "reverse lookup validation failed"
otherwise someone could map their IP to any name they like
to get around hostname based access control.
MTAs have done that kind of check "for ages".
BTW: does the DNS resolver used by nnrpd give the expected
result for your own IP?
reverse lookup validation failed - how do I fix this?
Re: reverse lookup validation failed - how do I fix this?