Pain point · Reliability & bugs · Causes churn
Test campaign delivers to one subscriber and errors with nested MAIL command
3 source threads · first seen 2021-04 · last seen 2023-12
Summary
Sending a test campaign produced repeated SMTP errors where only the first subscriber received the message and the rest failed.
Evidence
Excerpts are copied word for word from the source; follow the link to read it in full.
“looking at the mailserver logs I can see a lot less emails are delivered than claimed by listmonk”
“Because listmonk isn't handling SMTP errors properly, it thinks it's successfully sent out emails that are never actually sent”
“503 5.5.1 Error: nested MAIL command”