ISA simply routes the IP traffic from itself to your Exchange Server. It does not store, or even examine, the E-mails being transmitted. Therefore, no receipts are sent, etc. No, ISA cannot store SMTP mail, i.e. it cannot be used as a mail spool. Regards Nick Chadwick Development & Technical Support Manager Comsoft Limited, UK Tel: +44-(0)20-8240-4452 Fax: +44-(0)20-8240-4449 Mobile: +44-(0)7740-362408 Email: nick@xxxxxxxxxxxxxx < mailto:nick@xxxxxxxxxxxxxx> Web: http://www.comsoft.ltd.uk/ -----Original Message----- From: Anthony Sullivan [mailto:anthony@xxxxxxxxxxxxxxxxxxxxxxxxx] Sent: 13 September 2001 11:38 To: [ISAserver.org Discussion List] Cc: Michael Robinson Subject: [isalist] SMTP and ISA http://www.ISAserver.org List, Firstly my apologies if this has already been covered. A few questions on ISA and SMTP mail. Does ISA store and forward SMTP or does it simply pass through to the specified Exchange Server? With that in mind does ISA send the acceptance receipt to sending server when the Port 25 session is complete? Does ISA have the capability to store incoming mail when the specified Exchange server is down and then forward once the server has come back up again? Any help would be greatly appreciated. Anthony Sullivan ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: nick@xxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ********************************************************************** Disclaimer: This e-mail contains proprietary information some or all of which may be legally privileged. It is for the intended recipient only. If an addressing or transmission error has misdirected this e-mail, please notify the author by replying to this e-mail and then permanently delete the message from your computer. If you are not the intended recipient you must not use, disclose, distribute, copy, print or rely on the e-mail. The opinion expressed in this Email is that of the author and not necessarily that of Comsoft Limited. While attachments are virus checked, Comsoft Limited do not accept any liability in respect of a virus which is not detected. **********************************************************************