I am trying to connect to Mercury mail server with a java application and I am using JavaMail api. The connection is not successful and I’m getting this error in the log:
EHLO x.x.x.x
554 Invalid HELO format
Which means that it connects to the server but the helo format is not something that sever likes. I've tired to debug it and I got to this code in JavaMail “SMTPTransport” class which says:
serverOutput.write(cmdBytes);
serverOutput.write(CRLF);
serverOutput.flush();
and according to code:
private static final byte[] CRLF = { (byte)'\r', (byte)'\n' };
which seems consistent with RFC 821
I know that on windows \n has different meaning but I am not sure if this really is the root of problem? If it not then what can cause this? I checked mail server with mail client and it works fine and I checked the code with James mails server and it also works fine!
JavaMail API version is: 1.4.5 (latest release)
Mercury/32 : 4.7
I did a Google search on 554 Invalid HELO format and got a ton of hits about your specific Mercury problem. It's a bug.
http://community.pmail.com/forums/thread/4136.aspx
http://www.mantisbt.org/bugs/view.php?id=9645
http://ellislab.com/codeigniter/forums/viewthread/153130/
etc...