On Nov 30, 2009, at 6:28 AM, Ian Eiloart wrote:
Autoconfiguration shouldn't be too hard. Mailman has to be configured with a hostname. There are three options for the port:custom configuration 587 25Mailman can test the connectivity of each in turn, on the first message that it sends. Cache the port number on success. This should be run-time autoconfiguration, not install time autoconfiguration. That way, the configuration can cope with a change of host name. If a port becomes unavailable, then alternate ports could be tested...Other mail clients do this, including Apple Mail and MS Outlook, when configuring new accounts.Am I right in thinking that all the mail is typically routed through a local MTA?
Yes. I should also say that I think adding support for AUTH (via smtplib.SMTP.login()) is somewhat orthogonal to port selection. We should do the former even if we change nothing about current port selection.
Here's a thought on the latter for anybody wishing to hack: extend the semantics of [mta]smtp_port in Mailman 3 to allow for a list of whitespace separated ports to try, and add a cache_lifetime parameter. If int(config.mta.smtp_port) fails, try splitting the variable and int'ing the items. In that case, try each port in order and remember the winner for cache_lifetime. You don't need to keep the cached value in the db; it would be fine to throw it away and re- probe on outgoing queue restart.
In the new tradition of the 21st century: branches welcome. :) If someone does want to contribute here, please make the AUTH support a separate branch from the port probe support. I will be happy to review any such branches.
-Barry
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