| 
 Code (hexadecimal)               
 | 
 Description               
 | 
|---|---|
| 
 16#5100               
 | 
 Internal error detected               
 | 
| 
 16#5101                
 | 
 SMTP component not operational                
 | 
| 
 16#5102                
 | 
 Mail header not configured                
 | 
| 
 16#5103                
 | 
 Invalid mail header value detected (1, 2, or 3)                
 | 
| 
 16#5104                
 | 
 Cannot connect to SMTP server                
 | 
| 
 16#5105 
 | 
 Error detected during transmitting content of email body to SMTP server 
 | 
| 
 16#5106 
 | 
 Closing SMTP connection with the server returned a detected error message 
 | 
| 
 16#5107 
 | 
 SMTP HELO request unsuccessful 
 | 
| 
 16#5108 
 | 
 SMTP MAIL request unsuccessful — SMTP server may require authentication 
 | 
| 
 16#5109 
 | 
 SMTP RCPT request unsuccessful  
 | 
| 
 16#510A  
 | 
 No recipient accepted by the SMTP server  
 | 
| 
 16#510B  
 | 
 SMTP DATA request unsuccessful  
 | 
| 
 16#510C  
 | 
 Send email request contains an invalid length  
 | 
| 
 16#510D  
 | 
 Authentication unsuccessful   
 | 
| 
 16#510E   
 | 
 A reset component request was received while the connection was open   
 |