- if (this.messageid == null)
- throw new RuntimeException("every RFC2822 message must have a Message-ID: header");
+ if (messageid == null) {
+ SHA1 sha1 = new SHA1();
+ Stream s = this.getStream();
+ s.setInputDigest(sha1);
+ s.transcribe(new Stream(new NullOutputStream()));
+ byte[] end = new byte[sha1.getDigestSize()];
+ sha1.doFinal(end, 0);
+ messageid = "<synthetic.messageid." + Encode.toBase64String(end) + ">";
+ Log.info(this, "synthesized messageid " + messageid);
+ }
+ this.messageid = messageid;