What properties are supported by the Sun SMTP provider?

John Zukowski

The following is taken from the javadoc files for the com.sun.mail.pop3 package in JavaMail 1.2:

Name Type Description
mail.smtp.user String Default user name for SMTP.
mail.smtp.host String The SMTP server to connect to.
mail.smtp.port int The SMTP server port to connect to, if the connect() method doesn't explicitly specify one. Defaults to 25.
mail.smtp.connectiontimeout int Socket connection timeout value in milliseconds. Default is infinite timeout.
mail.smtp.timeout int Socket I/O timeout value in milliseconds. Default is infinite timeout.
mail.smtp.from String Email address to use for SMTP MAIL command. This sets the envelope return address. Defaults to msg.getFrom() or InternetAddress.getLocalAddress(). NOTE: mail.smtp.user was previously used for this.
mail.smtp.localhost String Local host name. Defaults to InetAddress.getLocalHost().getHostName(). Should not normally need to be set if your JDK and your name service are configured properly.
mail.smtp.ehlo boolean If false, do not attempt to sign on with the EHLO command. Defaults to true. Normally failure of the EHLO command will fallback to the HELO command; this property exists only for servers that don't fail EHLO properly or don't implement EHLO properly.
mail.smtp.auth boolean If true, attempt to authenticate the user using the AUTH command. Defaults to false.
mail.smtp.dsn.notify String The NOTIFY option to the RCPT command. Either NEVER, or some combination of SUCCESS, FAILURE, and DELAY (separated by commas).
mail.smtp.dsn.ret String The RET option to the MAIL command. Either FULL or HDRS.
mail.smtp.allow8bitmime boolean If set to true, and the server supports the 8BITMIME extension, text parts of messages that use the "quoted-printable" or "base64" encodings are converted to use "8bit" encoding if they follow the RFC2045 rules for 8bit text.
mail.smtp.sendpartial boolean If set to true, and a message has some valid and some invalid addresses, send the message anyway, reporting the partial failure with a SendFailedException. If set to false (the default), the message is not sent to any of the recipients if there is an invalid recipient address.
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