Gerch2003: Mailserver angeblich auf Blacklist

Beitrag lesen

Hallo Leute,

wir sind vor ein paar Monaten mit unseren Seiten auf einen eigenen neuen Server umgezogen.
Als Mailserver hab ich Xmail laufen.

Seit einiger Zeit haben wir auf einmal das Problem dass nicht mehr alle E-Mails von uns bei unseren Kunden usw. ankommen, bzw. zurück geschickt werden.

Hier mal eine solche Rückmeldung:

<00>] XMail bounce: Rcpt=[a@b.de];Error=[550 5.7.1 a@b.de: Recipient address rejected: Mail appeared to be SPAM or forged. Ask your Mail/DNS-Administrator to correct HELO and DNS MX settings or to get removed from DNSBLs; MTA helo: mail.hauswelt.de, MTA hostname: rps4769.ovh.net[94.23.21.36] (helo/hostname mismatch)]

Ich weis nun grad auch nicht weiter.
Hab mich schon durch einige RBLs und DNSBLs geklickt und meine Domains, bzw. IP mal testen lassen, bin aber jedes mal zu dem ergebnis bekommen, dass meine IP, bzw. Domains auf KEINER Blacklist stehen.

Bei einem habe ich allerdings einige Fehlermeldungen bezüglich des Nameservers bekommen:

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

FAIL Missing (stealth) nameservers FAIL: You have one or more missing (stealth) nameservers. The following nameserver(s) are listed (at your nameservers) as nameservers for your domain, but are not listed at the parent nameservers (therefore, they may or may not get used, depending on whether your DNS servers return them in the authority section for other requests, per RFC2181 5.4.1). You need to make sure that these stealth nameservers are working; if they are not responding, you may have serious problems! The DNSreport will not query these servers, so you need to be very careful that they are working properly.

pdns3.ultradns.org.
pdns2.ultradns.net.
pdns1.ultradns.net.
pdns6.ultradns.co.uk.
pdns5.ultradns.info.
pdns4.ultradns.org.

This is listed as an ERROR because there are some cases where nasty problems can occur (if the TTLs vary from the NS records at the root servers and the NS records point to your own domain, for example).
FAIL Missing nameservers 2

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

ERROR: One or more of the nameservers listed at the parent servers are not listed as NS records at your nameservers. The problem NS records are:
udns1.ultradns.net.
udns2.ultradns.net.

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Your DNS servers leak stealth information in non-NS requests:

Stealth nameservers are leaked [pdns6.ultradns.co.uk.]!
Stealth nameservers are leaked [pdns5.ultradns.info.]!
Stealth nameservers are leaked [pdns4.ultradns.org.]!
Stealth nameservers are leaked [pdns3.ultradns.org.]!
Stealth nameservers are leaked [pdns2.ultradns.net.]!
Stealth nameservers are leaked [pdns1.ultradns.net.]!

This can cause some serious problems (especially if there is a TTL discrepancy). If you must have stealth NS records (NS records listed at the authoritative DNS servers, but not the parent DNS servers), you should make sure that your DNS server does not leak the stealth NS records in response to other queries.

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Aber was bedeuten diese Meldungen? und was kann ich dagegen tun?
Oder kann es daran überhaupt nicht liegen?

Gruß Gerch,
bin auch im ICQ unter 336919244 zu erreichen.