[logback-user] SMTP Appender always shows DEBUG info

[Richmond, Thomas]

Using 1.3.0-alpha5 (which is, admittedly, Alpha), SMTPAppenderBase.java calls session.setDebug(true) at line 124, which causes a lot of SMTP info to spam the console. This is probably a merge error made during the checkin of c01fde48c1b3ebb9a5066f6300fcf81be1e0965b. But if it isn't, I don't think this should be the default behavior because:


  1.  The next line is "if (session == null)", meaning that session can be null here, meaning that session.setDebug(...) can NPE.
  2.  I don't want debug info spammed to the console.

If this is desired behavior, can I suggest passing a custom output stream to session that passes logger info to the logger in a way that I can squelch using regular logger configuration, for example as shown in Karl Richter's answer here: https://stackoverflow.com/questions/6995946/log4j-how-do-i-redirect-an-outputstream-or-writer-to-loggers-writers

Thanks for all the good work, I hope you find this helpful.

Tom
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