Diagnostic-Code: smtp; 451 Your account has been locked

good_samaritan

Registered
Aug 13, 2020
1
0
1
Malawi
cPanel Access Level
Root Administrator
I am a system administrator and one of my clients' emails cant get through and he is receiving a mail delivery failure massage with the following particulars:

Code:
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.antispamcloud.com [38.111.198.189]
    SMTP error from remote mail server after end of data:
    451 Your account has been locked. Please contact your administrator.:
    retry timeout exceeded
    
  [email protected]
    host smtp.antispamcloud.com [38.111.198.189]
    SMTP error from remote mail server after end of data:
    451 Your account has been locked. Please contact your administrator.:
    retry timeout exceeded
    
  [email protected]
    host smtp.antispamcloud.com [38.111.198.189]
    SMTP error from remote mail server after end of data:
    451 Your account has been locked. Please contact your administrator.:
    retry timeout exceeded
Reporting-MTA: dns; r120.websiteservername.com

Action: failed
Final-Recipient: rfc822; [email protected]
Status: 5.0.0
Remote-MTA: dns; smtp.antispamcloud.com
Diagnostic-Code: smtp; 451 Your account has been locked. Please contact your administrator.: retry timeout exceeded

Action: failed
Final-Recipient: rfc822; [email protected]
Status: 5.0.0
Remote-MTA: dns; smtp.antispamcloud.com
Diagnostic-Code: smtp; 451 Your account has been locked. Please contact your administrator.: retry timeout exceeded

Action: failed
Final-Recipient: rfc822; [email protected]
Status: 5.0.0
Remote-MTA: dns; smtp.antispamcloud.com
Diagnostic-Code: smtp; 451 Your account has been locked. Please contact your administrator.: retry timeout exceeded
I need urgent assistance from anyone who knows. Thank you in advance.
 

chrhisn

Registered
Sep 28, 2021
2
1
1
Melbourne, Australia
cPanel Access Level
Website Owner
Hi folks

My primary email address (which I have had for nearly 25 years) has been unable to send mail for the last two weeks. Every time I try to do so, I get a rejection reply containing the following:

host smtp.antispamcloud.com [*IP address removed*]
SMTP error from remote mail server after end of data:
451 Your account has been locked. Please contact your administrator.:
retry timeout exceeded

(I can provide the IP address referred to above - which always seems to be one of two variants - if that may be helpful.)

I only use webmail (Roundcube with CPanel apparently) if that is of any relevance.

I have been in contact with my ISP administrator, but it appears he has never seen this before and does not know how to fix it.

Would anyone have any idea how to resolve this?

Thanks very much,
Chris Naylor
 
Last edited by a moderator:

cPRex

Jurassic Moderator
Staff member
Oct 19, 2014
7,519
1,031
313
cPanel Access Level
Root Administrator
@chrhisn - the best thing to do in this situation would be to contact the hosting provider that controls the server. Someone with root access is going to need to check the mail logs on the system to determine the root cause of the issue, as the bounceback you receive doesn't give us enough detail to provide any useful advice.

I'm sorry I can't be more helpful on this one!