The keyword is "ETRN", assuming your Exchange client is not on a permanent
Internet connection.
ERTN is how the customer's Exchange has to be be setup, so that when he
connects to Internet, his Exchange, using its Internet Connector, willl
issue a
SMTP ETRN customer.com
command to Imail. This is all explained in the Imail manual. The customer
has to have a fixed ip address on his access router. The customer should
also setup Exchange to forward all outgoing mail to mail.tenforward.com, so
their mail can be dumped quickly on you while they are on-line, and you
will deliver it, after the customer hangs up.
On the Imail side, you have to set up Imail as a mail relay. The
customer.com domain(s) are not defined in Imail. Set up Imail SMTP
Security tab to "Relay for Addresses" and put the customer's fixed ip in there.
Then in NT c:\winnt\system32\drivers\hosts file, enter:
cus.tom.er.ip customer.com
This tells Imail that customer.com is to be relayed to that ip address.
In DNS, in the zone file for customer.com:
@ IN MX 5 mail.tenforward.com
This gets all incoming mail delivered to your Imail machine. Imail
receives it, see customer.com in hosts file and that Imail is permitted to
Relay for Addresses for that ip, and if customer.com is unreachable (on
hook) then, Imail will try to relay the mail to the ip address in hosts file.
anyway, that's the theory
Len
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