LTE Module Series
EC2x&EG9x&EM05 SMTP AT Commands Manual
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5
Summary of Error Codes
The error code <err> indicates an error related to mobile equipment or network. The details about <err>
are described in the following table.
Table 1: Summary of Error Codes
<err>
Meaning
651
Unknown error
652
The SMTP server is busy, such as uploading the body or sending an email.
653
Failed to get IP address according to the domain name.
654
Network error, such as failed to activate GPRS/CSD context, failed to establish the
TCP connection with the SMTP server or failed to send an email to the SMTP
server, etc.
655
Unsupported authentication type
656
The connection for the SMTP server is closed by peer.
657
GPRS/CSD context is deactivated.
658
Timeout
659
No recipient for the SMTP server
660
Failed to send an email
661
Failed to open a file
662
No enough memory for the attachment
663
Failed to save the attachment
664
The input parameter is wrong
665
SSL authentication failed
666
Service not available, closing transmission channel
