SMTP error codes
Mail servers produce Simple Mail Transfer Protocol (SMTP) codes in response to transaction requests. Some of these response codes indicate errors.
You may see the following errors:
Error code | Description |
---|---|
XGEMAIL_0001 | Message didn't contain a valid DKIM signature. |
XGEMAIL_0002 | Message failed a SPF check. |
XGEMAIL_0003 | Message failed a DMARC check. |
XGEMAIL_0004 | Sender IP address failed a RBL test. |
XGEMAIL_0005 | Sender domain failed a DBL test. |
XGEMAIL_0006 | Message rejected because the TLS version used doesn't match the version configured in your policy. |
XGEMAIL_0007 | Message rejected because your license has expired. |