Quote:
Originally Posted by MaestroDelWeb
I disagree with you bandit. I spent week after week reconfiguring my servers with every recommended fix and I was still getting tons of emails landing in the spam boxes or out right rejected.
Reverse DNS isn't even the whole equation that's like a standard part of a server setup. Keywords and formatting are important. If you legitimately (opt-in) email VIAGRA, CIALIS BEST PRICES, no matter how good your setup is, you're going to end up in some spam boxes. You can also be black listed without even realizing it. You also need to create SPF records. Plus probably a million other things.
DNSStuff has a good tool called the DNSReport that will give you a pass/fail for a lot of your server configurations but it still won't guarantee your email will land in the inbox even if you pass every aspect.
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In your case, contact the server admin @ the sites you're having problems to have your server whitelisted. Spam/Bulk folder problem solved.
By the way, that's not a mail server problem, but a filter one. SMTP is accepting your email, but it's first checked by a filter (Spamassassin, MailScanner, DSPAM) before being passed to the user's inbox (Spam/Bulk folder). That's what a good spam filter is supposed to do. I can't begin to tell you how many email servers that I fixed that didn't have a valid RDNS. It's the first thing I check after the actual config file.
Since you mentioned DNSStuff, the founder and admins there would agree. Hell, do a search of the keywords "reverse dns" and "sender policy" in @ DNSStuff forums and compare the number of posts between the two. With "reverse dns", the query is maxed @ 500. SPF stops @ 17 posts total. Very few email admins are using Domain Keys and/or the like.