i am using the goodnews extra for a website to send a newsletter once in a while.
After sending a news update today i noticed there were 55 send errors on 120 subscribers (respectively 3 on 114 last time). Does anyone know how to debug what these faults have been?
More then “send error” is not given. Logs provide no answers, even on the server the mail-logs don’t show any information.
Using SMTP: set to yes incl. auth. / set to no (tried both settings)
Who can help?