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-   -   Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 8.04 (http://www.howtoforge.com/forums/showthread.php?t=26592)

Nareau 5th September 2008 08:22

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 8.04
 
Thanks very much falko for the great howto. Everything works perfectly well for me; I can send and receive emails successfully however just one minor problem with my setup is that all emails sent from the virtual user accounts which I created end up being regarded as spams by gmail and ymail.

Can anyone please tell me how to get around this problem? Is it related with dns?

Thanks in advance

falko 6th September 2008 11:24

Make sure that you have a correct reverse DNS and SPF entry, and that you're not sending from a blacklisted IP: http://mxtoolbox.com/blacklists.aspx

blacky_penguin 12th September 2008 16:01

Also a very good practice is to have domainkeys installed. It's in regards to Yahoo/Gmail/Hotmail identifying email sent out from the server as spam.

Nareau 15th September 2008 11:31

I think my problem is related with reverse dns as falko stated so I am working with the hosting service to try solve the problem. Anyway, can anyone please tell me what is simply meant by "Also a very good practice is to have domainkeys installed" and how to get it done. I am quiet a newbie when it comes to dns.

blacky_penguin 16th September 2008 03:49

in basic words, your mail server will generate some keys and using those will sign the outgoing mails. Then the receiving side will compare those things with your DNS entries.

Here's some links
http://www.howtoforge.com/how-to-imp...lter-centos5.1
http://antispam.yahoo.com/domainkeys

http://dkim.org/
http://domainkeys.sourceforge.net/


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