it sends 3-4 recipients then it stops with error message

[wolfff]

It says connection interrupted by the server: which server? the provider one or my domain one? Number of connection is 1. Recipients 1 per mail. Till yesterday I sent a lot of email and it worked fine, today suddendly no more. Password and user are right. I did not change anything. What happened? please reply me soon, it's urgent! thank you

 

[stanbusk]

It is the server you have entered the address of in the settings panel. Perhaps you have reached some kind of delivery limit per hour or per day. Perhaps you should send your message at a lower pace using the group and interval settings as explained here