Hello,
I am having a problem in that mail from my server is getting received by yahoo/hotmail, etc., but it is automatically gettting routed to the recipient's junk mail box so they don't know that they are even getting the email.

The ip isn't blacklisted.

This is happening even when I send a blank message so it's not getting routed there by content triggers.

It's happening on individual messages - the messages aren't coming from a bulk list.

I've been searching for causes and have found two options:

1. When I check my dnsreport, it gives me:

WARNING: One or more of your mailservers claims to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). This probably won't cause any harm, but is a technical violation of RFC821 4.3.

domain.com claims to be host name.domain.com

2. When I look at the headers of my emails, I noticed there is a:
Received: from nobody by name.domain.com

Could either/both of these two be causing the problem?

And if so, how do I fix?

If not, any other suggestions?

Well ask them to look at their Yahoo/Hotmail content filter, spam filter or whatever rules for incoming mail. They must have it active in order for your msgs to be canned when it arrives to their inbox.

Msgs from your box should be leaving as username@yourhostname.com and arriving as username@yourdomain.com and if thats not the end result of the header arriving at the destination then you need to look at your server configuration. Can you post the header of the arriving msg to Yahoo/Hotmail please?