Laravel Error : All RCPT commands were rejected with this error 503

07.Feb.2020 Talha F. General 12 minute read 565 Views 21 Comments

Laravel implements a wrapper on top of the SwiftMailer library that makes email management very easy to configure and use at the same time.  The “Error 503: Valid RCPT command must precede DATA” happens when sending email. It’s telling you that your SMTP (outgoing mail) connection was not properly authent.......