PFD_SMTPLISTEN
pfd[PFD_SMTPLISTEN].fd = smtplisten;
pfd[PFD_SMTPLISTEN].events = 0;
pfd[PFD_SMTPLISTEN].events = POLLIN;
if (pfd[PFD_SMTPLISTEN].revents & (POLLIN|POLLHUP)) {