I've got a problam with email queue

[Asterix]

When I try to send a campaign (created with Campaign wizard, system version - 5.2.0a) I've got the following results:

1. Emails from target lists do not leave the queue
2. Emails from test list do not leave the queue as well, except emails that are connected with our domain name, these are delivered OK.

E-mail settings are OK, as I can send and receive emails with Outlook.

I've tried to find a solution for it browsing the forum and Sugar Wiki but unfortunately I couldn't find an answer.

Did someone had a similar challenge or maybe you know how to solve it?

I would appreciate every kind of help from you.

[crmsiva]

Did you checked the log file? Any Error messages there?

[JDS13]

Same problem here. Nothing in sugarcrm.log. In Process flag gets set but the message queue isn't processed. 5.2.0a.

I've tried this with four different SMTP servers, but that doesn't make any difference.