SMTP error from remote mail server after initial connection

Hello, I am new to the forum. I appreciate any and all help. I am getting the above error message. 

Here is the Full message and after that what my web host replied:

Thank you,

Error Message:

This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
[email protected]
host []
SMTP error from remote mail server after initial connection: (mxgmx017) Nemesis ESMTP Service not available
554-No SMTP service
554-IP address is black listed.

554 For explanation visit

From Webhost:


I could see that your local machine IP was blocked in server firewall for below reason.

csf.deny: # lfd: (smtpauth) Failed SMTP AUTH login from (US/United States/ 5 in the last 3600 secs - Thu Dec 14 13:55:53 2017

Now you can able to access the webmail without any issue also please use the correct user name and password and reconfigure the mail client.

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Ticket ID: #388387
Status: Answered

Ticket URL:

Hi Stephen.
Was this post just sharing the information that your IP address is blocked by GMX, or is there an actual question involved.