SMTP Mail Feed Problems.
Boxington Headmaker
A customer of mine has a mail server NT4/Exchange5.5 on an easynet dial-up service, he has his own .com domain, and easynet host the
domain, DNS, and the SMTP mail feed. The DNS entries for the MX records go something like:
pri 1 his_server
pri 2 easynet smtp backup #1
pri 3 easynet smtp backup #2
Often he will not receive an incoming email for 24+ hours after it was sent. When e-mails arrive they arrive in a 'bulk' (ie. many
different mails at a time.) His server is used for web and mail, and dials to easynet about every 45mins. He has no problem
posting outbound mail through easynet's SMTP servers.
Am I correct in assuming that the following is happening:
An e-mail sender (3rd party), is resolving his MX address as #1(his_server), but his server being off line, it sends the mail to
easynet's backup server.
Easynet's server queues the waiting mail, and retries at regular intervals (5mins, 10mins, 30, 1hr, 2hrs...etc.)
His mail is only delivered when both his server is on-line, and the SMTP server retries.
Apparently easynet do not support things like ETRN, so I can't force a mail collection.
Apparently easynet does not "monitor" when he goes on-line, and start the SMTP delivery then (I believe that this is how Demon's
SMTP service works?)
Are my above assumptions correct?
What should I do to enable his email to be collected/delivered to him at regular intervals?
Any and all help much appriciated...
Thanks,
--
Boxington Headmaker.
"Excess is never enough"