smtp relay - gmail - swiftmailer: Expected response code 220 but got code “”

问题

I am using gmail as an smtp server for my swiftmailer class.

however I am getting

Expected response code 220 but got code "", with message "" in "\classes\Swift\Transport\AbstractSmtpTransport.php"

What does this mean?

回答1:

I think it probably means you sent a blank line to the smtp server.

Make sure none of your commands have line feeds in them.

Can you log the transaction and paste a copy of the log?

see here for details about logging http://swiftmailer.org/docs/logger-plugin

回答2:

I got this when I had the wrong setting in the factories.yml file as below.

class: Swift_SendmailTransport

But it should be the following.

class: Swift_SmtpTransport

来源：https://stackoverflow.com/questions/4940698/smtp-relay-gmail-swiftmailer-expected-response-code-220-but-got-code