Need help from being spam listed

jeeweb said: "Hi I have a web site that provides online services to members. The web server sends out over 10000 emails every day to thousands of members who have opted in to receive email notifications and updates. Emails are sent only those members who have willingly selected in their control panel to receive email notifications. Each member who has opted in to receive notifications of updates to their accounts receives anywhere from 1-10 emails in a day. I believe this is not considered as spam as we only send emails to members who have asked us to. I have lately observed and members have been complaining that any email from my web site ends up in the Bulk Mail / Junk Mail folder in Yahoo Mail, Hotmail, Gmail and Outlook. I am not sure why this is happening, I believe so that may be my domain has been black listed or such owing to the volume of around 10000 emails sent out every day Can someone advice on what should I do so that this does not happen. Any help or advice on this matter is appreciated. Thanks"

Developer said: "You might not be listed. You could check the various databases if you search hard enough for a tool to do it. If I recall correctly, [url]www.whois.sc[/url] - now called [url]www.domaintools.com[/url] - has many tools like this. Spam filters also have other ways of testing emails and add up the spam score at the end of it. Here is an example - words like viagra might add 3 points, lots of capital letters might add 5 points, using 'Hello' for the subject might add 4 points, etc. and then if all the points go above 25 it is marked as possible spam. Also you must make sure a reverse DNS lookup on your server's IP address reveals your domain name you are sending from because some places use reverse DNS for checking for spam."

Developer said: "Try checking your IP if you are spam listed by pasting this into your address bar and replacing your server IP address with the one in it: domaintools.com/rbl/?ip=11.22.33.44"

Heather said: "Have you searched FAQ's at any of the places that are rejecting you? There could be some info at their sites concerning it. I think I remember being able to route stuff and set parameters within my Yahoo Email Account. Maybe your users need to do the same?"

tracepeople said: "I don't put taht much faith in spam filters they only get about 50% of the stuff...."

edwin said: "a lot of the big companies err in favor of removing bulk email."