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Plesk Error Massage 553 “Message did not Reach Intended Recipients. That Domain isn’t in my list of Allowed RCPThosts”.

2 Comments


Use this article to repair the following error message:

“Your message did not reach some or all of the intended recipients. 553 sorry, that domain isn’t in my list of allowed rcpthosts”

1. Log in as admin to the Plesk control panel.
2. In the server administration (click “Server” in the menu), click “Mail”.
3. Select the tab “Maximum letter size and relay mode parameters”.
4. Check the box “POP 3 lock time”
5. Click “Set”
6. Restart “psa”

This should repair the error message and allow all messages to be sent.

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2 thoughts on “Plesk Error Massage 553 “Message did not Reach Intended Recipients. That Domain isn’t in my list of Allowed RCPThosts”.

  1. Another fix:
    This happens when the environment variable is missing in the ‘smtp_psa’ file(/etc/xinetd.d/smtp_psa) and ‘smtps_psa'(/etc/xinetd.d/smtps_psa) files.

    Edit the above files to read the env value “SMTPAUTH=1 POPAUTH=1 POPLOCK_TIME=20” and restart xinetd service “/etc/init.d/xinetd restart”.

  2. Thanks for that fix, Mr. BC 😉

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