Mary said:
Also make sure you have automatic polling set up for no less than
every 10
minutes to give the servers time to reset. Tools, Options, Mail Setup,
Send/receive button.
Actually the recommendation is 5 minutes minimum. This isn't to provide
time for the server to reset (which you did not define). This is to
make sure that a current mail session has time to complete before the
next one begins. If your e-mail client is busy with its first session
and is still busy when the second session starts then the first session
gets terminated (the effect of which depends on the e-mail client; for
Outlook which does not update its mail ID list and delete the downloaded
items from the server until the mail session completes, this means
Outlook would end up retrying to download the same mails). which can
interfere with the first session. 5 minutes is usually sufficient to
let the e-mail client download all the new mails before the next poll
interval by that e-mail client. However, if you get really huge mails
(like they have large image files attached) then it could take longer to
download them so, in that case, you need to up the poll interval to
however long it takes to ensure the mail sessions don't overlap and
interfere with each other. Having the mail sessions too close and
interferring with each other is an e-mail client problem, not a server
problem.