Kent: > Hi Wietse, > > Thanks - as per my last e-mail, I am getting the errors back. > It's just the warnings I'm not getting back.
If you are concerned about mistakes, sendmail command line is not the whole story. There is a lot more that can go wrong. The MAILLOG file has a complete(*) record of successful and unsuccessful deliveries, including warnings that did not result in failure. http://www.postfix.org/DEBUG_README.html#logging Wietse (*) modulo system-xxx-d rate limiting, but you still have a choice of operating systems.
