Wednesday, July 15, 2009

Can a firewall on server block email from only one customer? We dont have any problem getting anyone elses?

This customer has had an IT person come in. We both use Cinergy Comm as an IP provider. Cinergy says our "firewall" is blocking the email. We don't use any sort of spam filter at all. We use Symantec Client security for our network. Using the same machine, the guy can email from his personal web account and it goes through fine. He says the emails sent from his company email appear to go out normally and he never gets an undeliverable message to indicate its rejected. I can't find any evidence that the emails ever got to our server. I think this is Cinergy's problem and don't want to pay an IT guy $75 an hour for 1 person who can't email us when its Cinergy all along.

Can a firewall on server block email from only one customer? We dont have any problem getting anyone elses?
It could be any number of reasons that his email isn't getting to you both on your end, on his, and everywhere in between. However, a firewall won't just stop one person's email from getting through. It would be stopping all email or none at all. Since it can be a range of possible culprits, I'd suggest the IT guy as a solution.

earn

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