Check your maillog and see if you are seeing something similar to this:

reason: 554- (RTR:BB)

In the failed emails. AOL and a lot of other ISPs are notorious for blacklisting IP addresses.  Here's a page describing it:

http://postmaster.aol.com/Postmaster.Errors.php

Also you need to make sure your domain is properly sent. A sure fire way to get blacklisted is to not have rDNS properly set up on your server.

You can also check your server on this site to see if it is blacklisted too. It's not 100%, but it will give you an idea:

http://www.mxtoolbox.com/blacklists.aspx


Jamie Holly
http://www.intoxination.net 
http://www.hollyit.net

On 8/16/2011 3:46 PM, Gastón Pablo Pérez wrote:
Hi:

If I execute the command mailq in my server I see that the sent mails are *** frozen ***
What does this mean?

"El software libre construye una sociedad mejor." (Richard Stallman)

Gastón Pablo Perez
Email: gpperez@gmail.com
Web: http://www.gpperez.com.ar
Ubuntu User #30611




2011/8/16 Prkos <prkos@prkos.hr>
Does the site email domain match the website domain? Some spam filters
mark emails as suspicious if those domains don't match.

If the site informs you the message has been sent and you can see the
entry in the Database log but the mail doesn't arrive most likely it's
something to do with email configuration and spam filters. Check the
mail log of your email server, find the message in the queue and see
what status it has (if you have access to your email server).

Mihaela

On 08/16/2011 08:51 PM, Gastón Pablo Pérez wrote:
> Hi there!
>
> I have a problem with contact form in Drupal 7, when I try to send a
> contact information through this, the site informs that the message
> was sent, but the mails doesn't come. In the same server I have other
> site with Drupal 6 and this site works perfectly, so I deduce that the
> problem is not on the mail server configuration.
>
> Any ideas?
>
> thanks in advance
>
> /"El software libre construye una sociedad mejor." (Richard Stallman)/
>
> Gastón Pablo Perez
> Email: gpperez@gmail.com <mailto:gpperez@gmail.com>
> Web: http://www.gpperez.com.ar
> Ubuntu User #30611
>
>

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