Email is not sending: SMTP could not be delivered as an infinite message loop was detected. (ERROR MTA-1010)

Created:

2016-11-16 12:48:23 UTC

Modified:

2017-08-08 13:31:21 UTC

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Email is not sending: SMTP could not be delivered as an infinite message loop was detected. (ERROR MTA-1010)

Applicable to:

  • Plesk 12.5 for Windows

Symptoms

Outgoing emails are not working. Email is sending from the client, but not reached destination address.

MailEnable MTA debug log file ' %plesk_dir%\\Mail Servers\\Mail Enable\\Logging\\MTA\\MTA-Activity-<date.time>.log ' contain the following:

08/18/16 11:39:06   Message (832B193A49B34483905AA232E331640F.MAI) from (SMTP) could not be delivered as an infinite message loop was detected. (ERROR MTA-1010)

SmartHost Enabled checkbox is set in MailEnable > Servers > localhost > Services and Connectors > SMTP > Properties > SmartHost and having IP address of the server itself.

Cause

SmartHost Enabled and having IP address of the server itself.

Resolution

Clean SmartHost Enabled flag

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