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smtp setup

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I have setup exchange2k and am able to recieve email but am unable to send. i have setup the smtp connector but all mail simply queues under the smtp protocol - i have it looking to the correct external dns servers, any thoughts?

9 replies

by mckaytech

Most often, I've found that deferred SMTP mail is either a DNS problem of some type or a firewall issue because port 25 is blocked at some point. However, it would be important to know whether you are using an outside POP3/SMTP server or whether this is a direct Internet connection.

One thing you might try is doing a manual SMTP send to a known good address from command line on the Exchange2K box. The resulting error codes reported back to you may give you a good idea where to look for thesolution.

paul

by westonmoore

how do i send via the command line? also, i am able to recieve smtp via tcp 25, presumably then i could send, but i additionally created a send smtp rule which doesnt help. the external dns i point to works for all my http requests... any additionalinsight. I have a dedicated/static ip internet connection.

by frobo

Hi,

my recommended config of the imc is to send all SMTP Mails to the Hostadress from an ISP.
The other way, configured to send via DNS means: a lot of time, money and nerouvs to spend.

frobo

by estebandelatorre

Your exchange server must be able to resolve dns properly in order to send emails. Check this out by surfing the internet. If you can surf (Directly not using a proxy), dns is OK
A Firewall to SMTP port 25 is not the problem due to the fact that you can receive emails.
THe other main reason are addresing rules. You must check the internet domain addresing rules. Default exchange values works fine. You must setup your addresing rules to userid@domain.com. Check this out first.

Hope it helps!

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