Undeliverable mail local

[Lakshman]

Hello,
I have posted on this topic before but to no avail. Since
I do not have any other resources I am posting again on
this topic here hoping someone would have an answer or
pointers.I have Outlook setup for Internal as well as
External mail.The external eMail is hosted by the ISP. The
internal e-mail is setup on an exchange 2000 server for
public folders, calendar etc. Whenever some users send an
e-mail it sends the e-mail out but sends an Undeliverable
message from the local account.I know the emails are going
out because the recepient receives them.On further
investigation I have also observed that these
undeliverables are primarily from AOL addresses.I have
disabled the Internal eMail account from the Send/Receive
group on Outlook. The users do not want to use different
profiles on Outlook as they want to be able to access the
contacts from the Internal mail accounts when they send
out eMails.Any help or pointers in the right direction
would be greatly appreciated.
Thanks,
Lakshman.

 

[Lanwench [MVP - Exchange]]

1) What version of Outlook are you using? Using Internet mail and Exchange
in versions of OL prior to 2002 is not supported and will cause problems. If
so, get rid of the POP and host your own mail. Your current configuration is
not supported in versions of Outlook prior to 2002, and is not ideal even
then. You're sorta defeating the point of a centralized server by relying on
Outlook to handle Internet mail. Hosting your own domain's mail will be a
lot easier, mail will be faster, you'll be able to use OWA and Out of
Office, you can easily assign multiple addresses to each user, can use
mail-enabled public folders, publicly addressable distribution lists/groups,
and can scan all inbound/outbound mail for viruses using Exchange AV
software on the server, etc - in fact, I recommend this route even if you
have OL2002. See http://www.msexchange.org/tutorials/MF002.html for
instructions on how
to get Exchange to handle all your mail. It's easy and there's no real
downside....

2) AOL has started rejecting mail from a lot of servers in an effort to
stop spam. Some reasons for being blocked would be -

Your SMTP server has no reverse lookup records (PTR)
Your IP is considered to be on a dialup or dynamic IP [1]
Your IP or SMTP server has been blacklisted as an open relay

For the reverse lookup, check out your domain at www.dnsreport.com; ask your
ISP to create the record for you, presuming you have a static IP.

If you don't have a static IP, you can set up an SMTP connector that points
to your ISP's SMTP server & add aol.com there.