Mails Not Being Sent

Hi,

Neither e-mail plugin (automessage or mass e-mail sender) is sending out messages. Everything seems okay, and the operations show as "Finished" or "Processed". But none of the recipients ever receive their e-mails.

Logs don't show anything out of the ordinary, though I'm checking again.

Any ideas on what else to check? These functions are important to us.

Thanks.