sendgrid/sendgrid-php — pull request #68 by Aqua-Ye (2014-02-05 12:15:17+00:00)
Title: Smtp send fix

This commit fixes ```Expected response code 250 but got code "421", with message "421 Timeout waiting for data from client"``` raised by SwiftMailer.

Idea from http://www.prowebdev.us/2013/06/swiftmailersymfony2-expected-response.html