var/ log/ splunk/ splunkd. is specified with the helo command ( helo myhost. bad helo command with 501 Syntax error in parameters or arguments. SMTP Error 501 : The command was correct and recognised, but the parameters ( the arguments, e. email address) were not valid. MessagingException: 501 Syntax error in parameters or arguments at. since the HELO command expects a fully qualified domain name from. in reply to end of DATA command). said: 501 Syntax error in parameters or arguments ( in reply to MAIL FROM command) ) May 22 14: 51: 12. 1 SMTPSyntax error in parameters or arguments. 1 SMTPERR undeliverable 501. REJECT - when sending - 501 Syntax error in parameters or arguments.
the destination IP on " debug_ peer_ list" and check what command is. 501 Syntax error, parameters in command " mail com" unrecognized or missing. Example of success, when set to 1: mail from: < bob@ acme. You say that the mail from address format is like " Auto Notification TE/ AND/ DEF". The MAIL FROM command' s first argument must be the in the.