At com.sun.mail.smtp.smtptransport.rcptto smtptransport.java 1835

A specific line of code!

The line at com.sun.mail.smtp.smtptransport.rcptto smtptransport.java 1835 appears to be a stack trace or a debug message from the JavaMail API.

Here's a breakdown of what each part of the line might mean:

Without more context, it's difficult to say exactly what this line of code is doing or what error or issue it might be related to. However, it's possible that this line is being executed as part of a JavaMail API method, such as sending an email message, and the rcptto method is being used to specify the recipient(s) of the message.