Good morning,
since the last plugin upgrade the smtp server (or destination server) block many send:
14:31:12 | Euro***@***.it | SMTP Error: data not accepted. [smtp]
* Reset SMTP after fail, result: 0
And some providers (not all) consider my newsletters like a spam adding in header this flags:
X-Spam-Flag: YES
X-Spam-Report: v=2.1 cv=CJ4TA3bD c=1 sm=1 tr=0 p=1lzjE193pE0A:10
a=q0MQUywdlqUPKHa5/IE7Eg==:117 a=VbbLQ7jUDSgIH9IAM1wPig==:17 a=1XWaLZrsAAAA:8
a=IkcTkHD0fZMA:10 a=hLHfxgobAAAA:8 a=pGLkceISAAAA:8 a=sZ6ELdRwAAAA:8
a=YNv0rlydsVwA:10 a=SSmOFEACAAAA:8 a=0QEfod3J3xB5AprGsu0A:9
a=x7u5TAlxxaQIXlmV:21 a=QEXdDO2ut3YA:10 a=_W_S_7VecoQA:10 a=p403mkujtbAA:10
X-Spam-Status: Yes
This spam flags are not present in welcome message or in smtp test, but ONLY in newsletters.
So, I tried to send with other smtp server or tried to send a blank newsletter but the flags are added alike.
Before of plugin upgrade everything worked well...
Do you kindly tell me how I can solve this problem?
Thank you very very much!
Matteo.