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Experimental: send user unknown

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M66B
2021-02-01 11:23:42 +01:00
parent aabfc099b3
commit be7d139f5d
9 changed files with 95 additions and 13 deletions
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37
app/src/main/java/eu/faircode/email/MessageHelper.java
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@@ -573,6 +573,43 @@ public class MessageHelper {
//headersPart.setDisposition(Part.INLINE);
//report.addBodyPart(headersPart);
imessage.setContent(report);
return;
} else if (EntityMessage.DSN_USER_UNKNOWN.equals(message.dsn)) {
// https://tools.ietf.org/html/rfc3464
Multipart report = new MimeMultipart("report; report-type=delivery-status");
String html = Helper.readText(message.getFile(context));
String plainContent = HtmlHelper.getText(context, html);
BodyPart plainPart = new MimeBodyPart();
plainPart.setContent(plainContent, "text/plain; charset=" + Charset.defaultCharset().name());
report.addBodyPart(plainPart);
String from = null;
if (message.from != null && message.from.length > 0)
from = ((InternetAddress) message.from[0]).getAddress();
StringBuilder sb = new StringBuilder();
sb.append("Reporting-MTA: dns;").append("dummy.faircode.eu").append("\r\n");
sb.append("\r\n");
if (from != null)
sb.append("Final-Recipient: rfc822;").append(from).append("\r\n");
sb.append("Action: failed").append("\r\n");
sb.append("Status: 5.1.1").append("\r\n"); // https://tools.ietf.org/html/rfc3463
sb.append("Diagnostic-Code: smtp; 550 user unknown").append("\r\n");
MailDateFormat mdf = new MailDateFormat();
mdf.setTimeZone(TimeZone.getTimeZone("UTC"));
sb.append("Last-Attempt-Date: ").append(mdf.format(message.received)).append("\r\n");
BodyPart dnsPart = new MimeBodyPart();
dnsPart.setContent(sb.toString(), "message/delivery-status");
dnsPart.setDisposition(Part.INLINE);
report.addBodyPart(dnsPart);
imessage.setContent(report);
return;
}