Resolved E-mail server smtp e-mail hanging in the e-mail queue

[DIEEX1]

Hi, I have thisla the problem when I want to send an e-mail via roundecube, which will be stuck under Start / Tools and Settings in the e-mail queue. I have installed the Plesk Premium Anti-Virus and the SpamAssassin. The SMTP server is postfix, and the IMAP / Pop3 server is Devecot. The log files which are located under / opt / psa / var / log / maillog spit me this out:

Nov 11 18:17:10 rs000553 postfix/smtpd[30697]: connect from ip-37-24-172-75.hsi14.unitymediagroup.de[37.24.172.75]
Nov 11 18:17:10 rs000553 postfix/smtpd[30697]: 5D9FB5C28DD: client=ip-37-24-172-75.hsi14.unitymediagroup.de[37.24.172.75], sasl_method=CRAM-MD5, [email protected]
Nov 11 18:17:10 rs000553 postfix/cleanup[30699]: 5D9FB5C28DD: message-id=<[email protected]>
Nov 11 18:17:10 rs000553 /usr/lib/plesk-9.0/psa-pc-remote[29021]: handlers_stderr: SKIP
Nov 11 18:17:10 rs000553 /usr/lib/plesk-9.0/psa-pc-remote[29021]: SKIP during call 'check-quota' handler
Nov 11 18:17:10 rs000553 postfix/qmgr[29065]: 5D9FB5C28DD: from=<[email protected]>, size=668, nrcpt=1 (queue active)
Nov 11 18:17:10 rs000553 postfix/smtpd[30697]: disconnect from ip-37-24-172-75.hsi14.unitymediagroup.de[37.24.172.75]
Nov 11 18:17:10 rs000553 postfix/smtp[30677]: 5D9FB5C28DD: host mx01.emig.gmx.net[212.227.17.5] refused to talk to me: 554-gmx.net (mxgmx104) Nemesis ESMTP Service not available 554-No SMTP service 554-Bad DNS PTR resource record. 554 For explanation visit http://postmaster.gmx.com/en/error-messages?ip=213.202.212.47&c=rdns
Nov 11 18:17:10 rs000553 postfix/smtp[30677]: 5D9FB5C28DD: to=<[email protected]>, relay=mx00.emig.gmx.net[212.227.15.9]:25, delay=0.24, delays=0.13/0/0.11/0, dsn=4.0.0, status=deferred (host mx00.emig.gmx.net[212.227.15.9] refused to talk to me: 554-gmx.net (mxgmx002) Nemesis ESMTP Service not available 554-No SMTP service 554-Bad DNS PTR resource record. 554 For explanation visit http://postmaster.gmx.com/en/error-messages?ip=213.202.212.47&c=rdns)

I would like to send the e-mail to the e-mail provider gmx.de/net I can from the logs "service" 554-Bad DNX PTR resource record and under the link "http://postmaster.gmx.com/en /error-messages?ip=213.202.212.47&c=rdns) "take the following" is written there: "5xy Bad DNS PTR resource record
(PTR-RR) of your IP address does not follow our guidelines. Possible reasons for this can be: 1. The PTR-RR states that the IP address was dynamically allocated. 2. The PTR-RR is a generic standard entry of your provider. Please allocate an independent and fully qualified domain name (FQDN) to your email server and the valid PTR-RR. 3. Individual rejection of the PTR-RR for system protection reasons. Please contact the administrator of your system. Under the e-mail setting I have selected via "domain-ip addresses". How can or how should I proceed to fix the error?

Thank you and greetings from germany

 

[UFHH01]

Hi DIEEX1m

Pls. have a look at the following investigations:

snitec.net resolves to 213.202.212.47
but
213.202.212.47 resolves to rs000553.fastrootserver.de​

According to your error message and the explanation:

(PTR-RR) of your IP address does not follow our guidelines. Possible reasons for this can be: 1. The PTR-RR states that the IP address was dynamically allocated. 2. The PTR-RR is a generic standard entry of your provider. Please allocate an independent and fully qualified domain name (FQDN) to your email server and the valid PTR-RR. 3. Individual rejection of the PTR-RR for system protection reasons. Please contact the administrator of your system

GMX stopped accepting eMails from IPs, where the REVERSE check resolves to a dynamic domain - name. Pls. consider to ask your hosting provider ( fastrootserver ) to reverse the rented IP to your MAIN - domain and change the hostname according to it. Most hosting provider offer the options to change the reverse DNS for rented IPs over their Control Panel, so that customers don't have to ask for the change over the support.