email - Undelivered Mail Returned to Sender -


just wondering if there way change mail subject "undelivered mail returned sender" else, if error code 550.

if no there way detect correct email.i not saying email validation.that part ok.but if there no mail box 550 error code.

thanks,

smtp reply code 550 means:

the requested command failed because user's mailbox unavailable (for example because not found, or because command rejected policy reasons).

double check email settings.

on other hand, default error reporting email subject fixed , cannot changed, set in remote email server.

reference: list of smtp server response codes


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