Hello, I know, it's not strictly relevant to Exim, but I know that here a some experienced postmasters … and I hope, some of you may even have connections to 1und1, web.de or some of these companies…
Since about yesterday we experience a strange behaviour of big German
hosters (I believe, they all are part of the United Internet company):
They refuse to accept mails from our systems:
SMTP error from remote mail server after initial connection:
host mx01.kundenserver.de [212.227.17.191]: 554-kundenserver.de (mxeue006)
Nemesis ESMTP Service not available
554-No SMTP service
554 invalid DNS PTR resource record, IP=212.80.235.156
But "dig -x 212.80.235.156" is (according to RFC2317)
;; ANSWER SECTION:
156.235.80.212.in-addr.arpa. 86265 IN CNAME
156.128-191.235.80.212.in-addr.arpa.
156.128-191.235.80.212.in-addr.arpa. 86265 IN PTR web-server.langer-emv.de.
And even dig 'web-server.langer-emv.de' maps to the address in question:
;; ANSWER SECTION:
web-server.langer-emv.de. 86400 IN A 212.80.235.156
Is there anybody with any good idea?
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
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