Exchange undeliverable messages - Server is not accepting connection

By suzanne.chong ·
Hi all,

I emailed to external parties (Gmail) from my company mail server. After two days, I received bounce back saying " on 6/7/2008 7:45 PM
Could not deliver the message in the time limit specified. Please retry or contact your administrator."

While running smtpdiag, the result shows "Error: Expected "220". Server is not accepting connection. Failed to submit mail to"

what does it actually mean? is it detected as spam from their side? the emails are just plain text and no attachment. I don't understand why it is so.

Any idea? Please advice. Thanks!


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