| SYNOPSIS | 
#include <dkim.h>
const char * dkim_getuser(
	DKIM *dkim
);
Retrieve the sending user associated with a message. | 
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| DESCRIPTION | 
| Called When | dkim_getuser() can be called at any time after a handle
    is initialized with a call to 
    dkim_sign() or
    dkim_verify(). |  | 
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| ARGUMENTS |  | 
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| RETURN VALUES | 
    | Value | Description | 
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 | NULL | The sending user has not or could not be determined
	    from the message represented by this handle. |  | otherwise | A pointer to the sending user. |  | 
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| NOTES | 
 This user is selected by finding the first "From" header field.
     Note that it is
     not guaranteed that this field was included in the set of fields fed
     to the DKIM signature hashes (assuming it was signed), and in any
     case its value may or may not have been valid at the time the message
     was generated.
 |