[ 
https://issues.apache.org/jira/browse/JAMES-3681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Karsten Otto updated JAMES-3681:
--------------------------------
    Description: 
When configuring the {{RemoteDelivery}} mailet for SMTPS via {{{}sslEnable{}}}, 
it ignores any timeouts set via {{timeout}} and {{connectionTimeout}} 
parameters, and uses the Java Mail defaults of infinite instead. Thus when 
talking to a slow or faulty server, James will never break the SMTPS 
connection, slowly exhausting the remote delivery thread pool, stalling and 
ultimately halting remote delivery completely.

*Analysis:* James converts its parameters to Java Mail properties 
"{{{}mail.smtp.x{}}}" for the remote session. But according to 
[https://javaee.github.io/javamail/docs/api/com/sun/mail/smtp/package-summary.html],
 Java Mail expects these properties to be "{{{}mail.smtp{}}}{{{}{*}s{*}.x{}}}" 
instead when using SMTPS.

*Workaround:* Provide timeout (and other) Java Mail properties explicitly in 
the mailet configuration, e.g.
{code:java}
<mailet match="All" class="RemoteDelivery">
    <sslEnable>true</sslEnable>
    ...
    <mail.smtps.timeout>180000</mail.smtps.timeout>
    <mail.smtp.connectiontimeout>60000</mail.smtp.connectiontimeout>
</mailet> {code}

  was:
When configuring the {{RemoteDelivery}} mailet for SMTPS via {{{}sslEnable{}}}, 
it ignores any timeouts set via {{timeout}} and {{connectionTimeout}} 
parameters, and uses the Java Mail defaults of infinite instead. Thus when 
talking to a slow or faulty server, James will never break the SMTPS 
connection, slowly exhausting the remote delivery thread pool, stalling and 
ultimately halting remote delivery completely.

*Analysis:* James converts its parameters to Java Mail properties 
"{{{}mail.smtp.*{*}{*}{}}}" for the remote session. But according to 
[https://javaee.github.io/javamail/docs/api/com/sun/mail/smtp/package-summary.html],
 Java Mail expects these properties to be "{{{}mail.smtp{}}}{{{}{*}s{*}.*{}}}" 
instead when using SMTPS.

*Workaround:* Provide timeout (and other) Java Mail properties explicitly in 
the mailet configuration, e.g.
{code:java}
<mailet match="All" class="RemoteDelivery">
    <sslEnable>true</sslEnable>
    ...
    <mail.smtps.timeout>180000</mail.smtps.timeout>
    <mail.smtp.connectiontimeout>60000</mail.smtp.connectiontimeout>
</mailet> {code}


> RemoteDelivery mailet ignores timeout parameters for SMTPS
> ----------------------------------------------------------
>
>                 Key: JAMES-3681
>                 URL: https://issues.apache.org/jira/browse/JAMES-3681
>             Project: James Server
>          Issue Type: Bug
>          Components: Remote Delivery
>    Affects Versions: master
>            Reporter: Karsten Otto
>            Priority: Major
>
> When configuring the {{RemoteDelivery}} mailet for SMTPS via 
> {{{}sslEnable{}}}, it ignores any timeouts set via {{timeout}} and 
> {{connectionTimeout}} parameters, and uses the Java Mail defaults of infinite 
> instead. Thus when talking to a slow or faulty server, James will never break 
> the SMTPS connection, slowly exhausting the remote delivery thread pool, 
> stalling and ultimately halting remote delivery completely.
> *Analysis:* James converts its parameters to Java Mail properties 
> "{{{}mail.smtp.x{}}}" for the remote session. But according to 
> [https://javaee.github.io/javamail/docs/api/com/sun/mail/smtp/package-summary.html],
>  Java Mail expects these properties to be 
> "{{{}mail.smtp{}}}{{{}{*}s{*}.x{}}}" instead when using SMTPS.
> *Workaround:* Provide timeout (and other) Java Mail properties explicitly in 
> the mailet configuration, e.g.
> {code:java}
> <mailet match="All" class="RemoteDelivery">
>     <sslEnable>true</sslEnable>
>     ...
>     <mail.smtps.timeout>180000</mail.smtps.timeout>
>     <mail.smtp.connectiontimeout>60000</mail.smtp.connectiontimeout>
> </mailet> {code}



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