TRIRIGA not sending email - MailAuthenticationException errors

Question

Whenever I publish a TRIRIGA Business Object or do something that should cause TRIRIGA to send an outgoing email, no email is sent and an error like the following appears in my server.log: 2015-10-14 10:18:03,167 WARN [com.tririga.platform.error.ErrorHandler](WFA:12020990 - 12564078 Associate:287434693 IE=287434676) Authentication failed; nested exception is javax.mail.AuthenticationFailedException: failed to connect[MID-620604269] com.tririga.platform.error.PlatformRuntimeException: org.springframework.mail.MailAuthenticationException: Authentication failed; nested exception is javax.mail.AuthenticationFailedException: failed to connect at [...] Caused by: org.springframework.mail.MailAuthenticationException: Authentication failed; nested exception is javax.mail.AuthenticationFailedException: failed to connect [...] Caused by: javax.mail.AuthenticationFailedException: failed to connect at javax.mail.Service.connect(Service.java:322) at [...] I do not have EXTERNAL_MAIL_SERVER_USERNAME or EXTERNAL_MAIL_SERVER_PASSWORD values set, as I am using Anonymous SMTP authentication. My mail server indicates that there was a "generic failure" and it was unable to "canonify user and get auxprops." Do I need to hardcode values in order to get past the above error?