MTA packaging (exim, postfix, sendmail, ssmtp)

[Christian Franke]

Christian Franke wrote:
> Yaakov Selkowitz wrote:
>> Corinna, Christian, Daniel, Pierre,
>>
>> Because MTAs must be user-configured, and we certainly don't want to 
>> lose the selection during package upgrades, the alternatives cannot 
>> be handled in package postinst/prerm.  I think the only way to make 
>> this work is for each MTA config script to handle these instead by 
>> including the following snippets in the respective MTA config scripts.
>>
>> Please review this carefully in case I missed anything.
>>
>> ...
>>
>> postfix:
>> ========
>>
>> /usr/sbin/alternatives --install /usr/sbin/sendmail mta 
>> /usr/sbin/postfix.exe 0 \
>>     --slave /usr/lib/sendmail mta-sendmail /usr/sbin/postfix.exe \
>>     --slave /usr/bin/mailq mta-mailq /usr/sbin/postfix.exe \
>>     --slave /usr/bin/newaliases mta-newaliases /usr/sbin/postfix.exe
>>
>> /usr/sbin/alternatives --set mta /usr/sbin/postfix.exe
>>
>
> "postfix" is the control program, there is a separate "sendmail" 
> command for sendmail emulation. Attached is the alternatives part of 
> the /etc/postinstall/postfix.sh from the current draft postfix 
> package. It also provides links for the related man pages.
>
Forgot to mention: This will be moved from postinstall to the configure 
script as requested.