Properly detect EOF in SmtpEmailTransport::read()

diff --git a/wcfsetup/install/files/lib/system/email/transport/SmtpEmailTransport.class.php b/wcfsetup/install/files/lib/system/email/transport/SmtpEmailTransport.class.php
index d68d456d589395f8c5aa5d3d9250726c331cea4d..59e710f49b1938d6e796b00086147ee9d1ec1f4d 100644 (file)
--- a/wcfsetup/install/files/lib/system/email/transport/SmtpEmailTransport.class.php
+++ b/wcfsetup/install/files/lib/system/email/transport/SmtpEmailTransport.class.php
@@ -201,6 +201,10 @@ class SmtpEmailTransport implements IEmailTransport {
                                }
                        }
                        else {
+                               if ($this->connection->eof()) {
+                                       throw new TransientFailure("Unexpected EOF / connection close from SMTP server.");
+                               }
+                               
                                throw new TransientFailure("Unexpected reply '".$data."' from SMTP server.");
                        }
                }