[CentOS] Mail server with both postfix and sendmail installed, active MTA gets switched.
Lamar Owen
lowen at pari.eduSat Jan 5 21:15:35 UTC 2019
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On 1/5/19 2:18 AM, Gordon Messmer wrote: > On 1/4/19 8:29 PM, Lamar Owen wrote: >> I have had updates twice now switch the active MTA to sendmail, and I >> have to manually 'systemctl disable sendmail; systemctl stop >> sendmail' and 'systemctl enable postfix;systemctl start postfix' >> afterwards. > Run "systemctl mask sendmail" as well. That should permanently > disable the service. Worthwhile thing to do; still curious about what caused it, but if this will lock it out..... > >> I am trying to find out what package update caused this to switch; or >> which logfile to look at to show me the systemctl messages that show >> the enable/disable sequence and points me to the correct package to >> file the bug against. > ... > If the problem is a trigger on the sendmail package, it could run > without any changes to the sendmail package itself. Ah, yes, indeed. Only three packages are output: sendmail itself, postfix, and the third party software; postfix did get an update recently, and after checking to see I didn't reboot after that update. And the postfix scriptlets do twiddle with alternatives, using the --initscripts command to alternatives; and this is what I believe did me in. So, it seems as part of my setup that I failed to set the alternatives properly, and that has been corrected, as well as setting 'systemctl mask sendmail' so we'll see how that rides... Thanks, Gordon!
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