XWiki.sendMessage() uses a syntactally illegal HELO argument (SMTP)

XWiki.sendMessage() is sending an illegal argument to HELO, and my very correct Exim4 server is rejecting it when trying to send the registration validation email. The Exception is: com.xpn.xwiki.XWikiException: Error number 10005 in 10: Could not login to mail server 127.0.0.1 port 25 error code 501 (501 Syntactically invalid HELO argument(s) The HELO is: "HELO XWiki version 1.0-beta-5.2310" This is actually illegal according to SMTP specs, it must be a <domain>. Note, this is NOT the "from" address, it is just the SMTP HELO. XWiki.sendMessage() has: if ((login == null) || login.equals("")) login = "XWiki version " + getVersion(); I think it should be: InetAddress.getLocalHost().getHostName(). or settable in XWiki.cfg to the domain you want. In all cases (never login), which, for registration, is not there anyway. -Tom -- May 4, 1970: Alison Krause, Jeffrey Miller, Sandra Scheuer, William Schroeder.