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Asked: 2026-05-11T15:54:46+00:00

I’m trying to configure log4j to use the SMTPAppender but I keep getting relay

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I’m trying to configure log4j to use the SMTPAppender but I keep getting relay access denied errors. I get this error when executing my code on my laptop AND straight from my shared hosting environment.

Here’s the relevant config:

#CONFIGURE SMTP log4j.appender.email=org.apache.log4j.net.SMTPAppender log4j.appender.email.SMTPHost=mydomain.com log4j.appender.email.SMTPUsername=myuser log4j.appender.email.SMTPPassword=mypw log4j.appender.email.From=myuser@mydomain.com log4j.appender.email.BufferSize=1 log4j.appender.email.EvaluatorClass=TriggerLogEvent log4j.appender.email.layout=org.apache.log4j.PatternLayout log4j.appender.email.layout.ConversionPattern=%m

If I switch to log4j.appender.email.SMTPHost=mail.mydomain.com instead then I get authentication errors. My hosting is on DreamHost so bonus points if anyone has set up log4j SMTPAppender using a DreamHost email account.

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1 Answer

  1. Turns out I just had the properties all wrong. Should be:

    #CONFIGURE SMTP log4j.appender.email=org.apache.log4j.net.SMTPAppender log4j.appender.email.SMTPHost=mail.mydomain.com log4j.appender.email.SMTPUsername=myuser@mydomain.com log4j.appender.email.SMTPPassword=mypw log4j.appender.email.From=myuser@mydomain.com log4j.appender.email.BufferSize=1 log4j.appender.email.EvaluatorClass=TriggerLogEvent log4j.appender.email.layout=org.apache.log4j.PatternLayout log4j.appender.email.layout.ConversionPattern=%m
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