[logback-dev] [JIRA] Updates for LOGBACK-1594: Treat empty username string as null in SMTPAppenderBase

[QOS.CH (JIRA)]

logback / LOGBACK-1594 [Open]
Treat empty username string as null in SMTPAppenderBase

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https://jira.qos.ch/browse/LOGBACK-1594

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 Issue created
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Mark created this issue on 17/Dec/21 11:42 AM
Summary:              Treat empty username string as null in SMTPAppenderBase
Issue Type:           Bug
Assignee:             Logback dev list
Components:           logback-core
Created:              17/Dec/21 11:42 AM
Priority:             Minor
Reporter:             Mark
Description:
  When configuring an SMTPAppender, an empty username value is treated as valid value.
  
  Specifically:
  {code:java}
  <appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
    <username></username> 
  </appender>{code}
  We use variable substitution, so it would actually be 
  {code:java}
  <appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
    <username>${SMTP_USERNAME}</username>
  </appender>{code}
   And sometimes we don't actually want to authenticate.
  
   
  
  It would be nice if empty usernames were handled the same as if it were never specified.


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