Hi,

I've been using the campaign module of SugarCRM with no problem for a few months, but just yesterday I've send a campaign with around 160 recipients. After a few hours, I noticed 37 of those emails were stuck in the queue.

I tried again another campaign, this one with 700 recipients (including the same 160 recipients). This time, only 3 got stuck. So I now have a 40 email-long queue thats not going out, and I can't see why since around 800 went out without trouble.

The only thing I could think of was an invalid email string, but they all seem very valid...

Any clue? I am using 4.20 at the moment.

Regards,

Mike