Newsletter shipping
I use AcyMailig Essential 5.10.21 your joomla 3.10.2
For a week now I can no longer send newsletters after many years without problems. Every week I send 1076 newsletters and now nothing comes but the one sent to the editorial staff.
Ricevo questo messaggio: Undelivered Mail Returned to Sender
Why what should I do? It is like this message to happen for 1076 recipients.
Thank you
Very cordially
Ignazio Mazzoli
