javax.mail from address like "[email protected]" not working

I am using javax.mail.1.4.4 and i have set from address to

**MimeMessage mime = new MimeMessage(session)
mime.from = new InternetAddress(msg.fromAddress)**

When i tried fromaddress as "[email protected]" it will be sending below error.

    **MAIL FROM:<[email protected]>
501 5.1.7 Bad sender address syntax
DEBUG SMTP: got response code 501, with response: 501 5.1.7 Bad sender address syntax

RSET
250 2.0.0 Ok
DEBUG SMTP: MessagingException while sending**

And in other case like "[email protected]" it is working properly.

Can anyone has any idea how to allow mail address like "[email protected]"?

Solution

deg-.com is not a valid domain name, which is probably why your mail server seems to be rejecting it. According to rfc-1034, domain name can be only of format

<domain> ::= <subdomain> | " "

<subdomain> ::= <label> | <subdomain> "." <label>

<label> ::= <letter> [ [ <ldh-str> ] <let-dig> ]

<ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str>

<let-dig-hyp> ::= <let-dig> | "-"

<let-dig> ::= <letter> | <digit>

So the last character of domain name (leaving out tld) cannot be -, it can only be a letter or a digit.

It's not related to javax.mail, such a domain name should not exist.