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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#define USER "ud12_38"
int main()
{
char *user = getenv("SMTPAUTHUSER");
if (user != NULL && strncmp(user, USER, strlen(USER)) == 0)
{
puts("E550 YOU HAVE BEEN BANNED - PLEASE CONTACT UD MEDIA");
fprintf(stderr, "block: smtp user %s has been blocked\n", user);
}
return 0;
}