LTE Module Series
EC2x&EG9x&EM05 SMTP AT Commands Manual
EC2x&EG9x&EM05_SMTP_AT_Commands_Manual 26 / 31
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
The SMTP server is busy, such as uploading the body or sending an email.
Failed to get IP address according to the domain name.
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.
Unsupported authentication type
The connection for the SMTP server is closed by peer.
GPRS/CSD context is deactivated.
No recipient for the SMTP server
No enough memory for the attachment
Failed to save the attachment
The input parameter is wrong
SSL authentication failed
Service not available, closing transmission channel
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