Changing the exchange greeting when antoher server connects

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Exchange security
Microsoft Exchange
Hello, I am running an exchange 2003 sp2 server. I am having problems sending to a couple of domains which are valid. I have tested these domains from other accounts I have (i.e. hotmail, etc.) and they recieve mail fine from those e-mail accounts but not from my server. I have checked DNS records of my mail server and I do have a reverse DNS setup, A and MX records set up as well. I see a possilbe issue in the greeting that my mail server sends out. Is there a way to change it or should i just change the host name of that computer? It contains an "_" in the name so I was wondering if I can change the greeting or just change the host name of that computer? If I change the host name of the pc, then I have to change about 50 outlook 2003 users to the new name. The exchange server is behind a firewall with nat setup and the proper translations configured. Ideas? Thanks in advance for the help! Jay

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Jay,

I have had issues on the other side of this problem that may help you troubleshoot. We got complaints from a couple of outside vendors that they could not send email to us from their company email, but they could from other accounts like hotmail, etc.

We have a third party vendor that filters all our incoming email and we discovered that they were blocking these companies erroneously as SPAMMERS. Once they removed the block, they were able to send to us successfully.

I had to get the outside vendor on the phone and find out what IP their company sends from and provide that information to our third party email filtering vendor.

Chances are good that your domain is being blocked for some reason. You could be black listed, or they could have a third party vendor like we do that has erroneously identified your domain as a SPAMMER.

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  • Slashman
    Technio, I agree however, oddly enough, the domains that I am having problems sending to are hosted by our ISP and to complicate this further, I can send to other domains that they host with out any problems except these 2 domains. This is what has us and the ISP confused on.
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  • Technochic
    It's not your ISP, it's that company. There are many who have domains on the same ISP as we are, but it was only us they could not send email to. The company with the domain that will not accept your email has blocked you in one way or another. Or they have a third party vendor doing their filtering like we do and that vendor has you blocked. Contact the IT department of that domain. I am not surprised your ISP has no clue. Ours wouldn't either.
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  • Slashman
    Technochic, Appologies on the spelling of your name on my last message. Here is the weird thing with this. All the domains I am having a problem sending to are hosted (e-mail) with the same ISP as myself. The domains that do work are the ones that have spam filtering turned on by the ISP's spam filter vendor (the ISP in this case is the same as myself). The ones I can't send to are hosted @ same ISP as myself but have no spam filtering turned on. I did a check of their domains via dnsreport.com and found out the ones that do work have a spam filtering mx record and the ones that don't work, don't have spam filtering. So I just sent and e-mail to my ISP asking why can i send e-mail to ones that have spam filtering and the ones that don't I can't. I'll see what they say to that :)
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  • Slashman
    Just so you all have an update to this (because it still isn't fixed and thought you all might get a kick) After about 30 e-mails between myself and the ISP, they added a second reverse DNS for our mail server. Tested it again and it didn't work. Now here is where i decided to get smart. I changed our mail server temporarily to our backup provider (different ISP then primary) and what do you know... i could send e-mail all day to the domains that didn't work. ODD??? So i sent my ISP a copy of the MX records that i could and couldn't send to as well as my results with the test of the other ISP. All they could come up with is modifying the reverse DNS? Personally, i think they have a routing problem within their own mail server. I also checked to see if we were black listed and we are not. Now funny thing with this is, they changed the way their hosted domain mail accounts were setup when this all started and they still won't admit that their server is the issue. Any one have any other suggestions? (see original question and my first response for further details).
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