Hello,
we are using the Events Booking plugin, but today an email was declined by the mail server of an attendee with the error "501 Syntax error - line too long":
Code:
"SMTPC" 2992 1610 "2023-02-01 20:19:37.911" "212.***.***.***" "SENT: MAIL FROM:<sender@joomladomain>"
"SMTPC" 2540 1610 "2023-02-01 20:19:38.036" "212.***.***.***" "RECEIVED: 250 Requested mail action okay, completed"
"SMTPC" 2540 1610 "2023-02-01 20:19:38.036" "212.***.***.***" "SENT: RCPT TO:<attendee@attendeedomain>"
"SMTPC" 2992 1610 "2023-02-01 20:19:38.067" "212.***.***.***" "RECEIVED: 250 OK"
"SMTPC" 2992 1610 "2023-02-01 20:19:38.067" "212.***.***.***" "SENT: DATA"
"SMTPC" 4236 1610 "2023-02-01 20:19:38.083" "212.***.***.***" "RECEIVED: 354 Start mail input; end with <CRLF>.<CRLF>"
"SMTPC" 1924 1610 "2023-02-01 20:19:38.114" "212.***.***.***" "SENT: [nl]."
"SMTPC" 2992 1610 "2023-02-01 20:19:38.130" "212.***.***.***" "RECEIVED: 501 Syntax error - line too long"
"SMTPC" 2992 1610 "2023-02-01 20:19:38.130" "212.***.***.***" "SENT: QUIT"
According to this
stackoverflow
, maybe using chunk_split() helps to solve this issue, but I currently have no idea, where to look for the root cause...
Is there anyone who has an idea? It seems to happen only for specific mail hosters.
Thanks in advance!
