configuring mx record for alternate delivery location
my company used microsoft hosted exchange services (bpos for short)
my mx record is pointing to microsoft
i have an internal server setup to receive mail @companyname.com
the same domain that my microsoft hosted exchange services uses
can i setup a second mx record SO if the user is not found on my hosted exchanged environment, it will try to deliver to the alternate location?
im using an app internally which generates email accounts for receiving messages. these accounts are never setup in microsoft hosted exhange, so when i email these accounts microsoft sends a NDR that the recipients email address does not exist.
is it possible to correct this with additional mx records?
my mx record is pointing to microsoft
i have an internal server setup to receive mail @companyname.com
the same domain that my microsoft hosted exchange services uses
can i setup a second mx record SO if the user is not found on my hosted exchanged environment, it will try to deliver to the alternate location?
im using an app internally which generates email accounts for receiving messages. these accounts are never setup in microsoft hosted exhange, so when i email these accounts microsoft sends a NDR that the recipients email address does not exist.
is it possible to correct this with additional mx records?
WHat server do you have setup internally? You could set your MX to to your server and then configure it to forward on all unknown mail directly to the server pointed to by your current MX record.
ASKER
its a third party product, ecm solution which runs its own mail server
this server is externally accessible
are you saying i may possibly be able to have my hosted exchange forward unknown mail to the second mx record? or does it involve a different process? i can call microsoft to check, i just want to be clear first
thanks for your help
this server is externally accessible
are you saying i may possibly be able to have my hosted exchange forward unknown mail to the second mx record? or does it involve a different process? i can call microsoft to check, i just want to be clear first
thanks for your help
If you have one mx pointing to microsoft and one mx pointing to your server, then all mail will typically be tried to deliver to the "better" one (lower priority value). In case of e.g. connection failure the mx with worse priority should be tried next, but not in case of a permanent error (such as USER NOT KNOWN).
In theory, if you could coerce your server to respond with a different (non-permanent) error message instead, things *might* work out, i.e. senders might try the microsoft server instead. (Note that this woul d not be RFC compliant, so don't do it anyway).
However, in case of congestion etc. that server might be tried anyway even for existing users.
In theory, if you could coerce your server to respond with a different (non-permanent) error message instead, things *might* work out, i.e. senders might try the microsoft server instead. (Note that this woul d not be RFC compliant, so don't do it anyway).
However, in case of congestion etc. that server might be tried anyway even for existing users.
ASKER
very good explanation hagman
so it sounds like this simply isnt going to work
so it sounds like this simply isnt going to work
Its exactly the same explination as I gave you in the first post with a few extra words thrown in :D
ASKER CERTIFIED SOLUTION
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The MX points to any valid Mail server for your domain. If the server on the end of it is valid for your domain and returns a USER NOT KNOWN error to a sending smtp server than that server assumes that it is an authorative answer.