I am having trouble sending e-mail to our local university. Recipient reports they do not receive the message. I do not receive anything back. Network Admin at school reports they are using "Mail Hurdle" to cut down on spam. This rejects the e-mail if the address is unknown. Asks the sending server to try again in 5 minutes. On second attempt, the filter lets the e-mail thru - and allows e-mail from this address for 30 days. Then it starts the reject procedure again. He suggests that my Groupwise installation is not "retransfering" the message. Also could be called "retransmit". Where and how does this get set?