mail issues - bad header - misinterpreted content

[doekia]

The latest seems to be buggy and prone mix mime boundaries while sending report mail.

One symptom lead to: X-Amavis-Alert: BAD HEADER SECTION, MIME error: error: unexpected end of preamble

After hours of test, this seems to be related to this issue within SwiftMailer, applying this patch fixes the boundary mix: https://github.com/swiftmailer/swiftmailer/pull/565

Considering my report are full utf-8 (japanese content), I also added 8Bit encoding to ensure proper delivery/display lib/PhpReport/PhpReports.php line 482 on my version

                // Create the message
                $message = Swift_Message::newInstance()
                        ->setEncoder(Swift_Encoding::get8BitEncoding())
                        ->setSubject($subject)
                        ->setFrom($from)
                        ->setTo($email)
                        //html body
                        ->setBody($email_html, 'text/html', 'utf-8')
                        //text body
                        ->addPart($email_text, 'text/plain', 'utf-8')
                ;

                $attachment = Swift_Attachment::newInstance()
                        ->setFilename('report.csv')
                        ->setContentType('text/csv')
                        ->setBody($csv, 'text/csv', 'utf-8')
                ;