Unable to send email using Exchange 2007 SMTP server
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
When trying to use Confluence to send email through Exchange 2007 SMTP server, the following appears in the atlassian-confluence.log:
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An error has occurred with sending the test email:
com.atlassian.mail.MailException: javax.mail.MessagingException: Can't send command to SMTP host;
nested exception is:
java.net.SocketException: Software caused connection abort: socket write error
at com.atlassian.mail.server.impl.SMTPMailServerImpl.send(SMTPMailServerImpl.java:191)
at
Cause
Exchange server does not have relay enabled for Confluence server.
Resolution
Enable relay for Confluence server in Exchange server.
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