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Old 07-27-2021, 11:58 AM   #45
DNSB
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Quote:
Originally Posted by fnd View Post
can anyone help please?

reply: b'554-No SMTP service\r\n'
reply: b'554-IP address is block listed.\r\n'
reply: b'554 For explanation visit https://www.ionos.com/help/index.php...1.103&c=bl\r\n'
reply: retcode (554); Msg: b'kundenserver.de (mxeue112) Nemesis ESMTP Service not available\nNo SMTP service\nIP address is block listed.\nFor explanation visit https://www.ionos.com/help/index.php...5.171.103&c=bl'
If you check the URL in your posted log and look at the various reasons for a 554 code, you will find this one for a blacklisted address:

Quote:
554 IP address is blacklisted

Problem:

A delivery of your email was rejected due to a DNSBL entry of your IP.

Solution;

Contact IONOS to have an incorrect entry checked.
Basically, it is saying that your IP address has been marked as sending spam. If you open Blacklist Check and click on Check My IP Address, it should let you know which DNSBL list if any your IP address is found on.
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