Most of them involve changing the daemon’s configuration in /etc/sendmail.mc and rebuilding sendmail.cf
Specific things that can affect performance:
dnl # Sendmail, Chap 24.9.13, Page 955
dnl # Disable re-write of queue control file (will result in duplicates
dnl # if the daemon is interrupted during a delivery)
define(`confCHECKPOINTINTERVAL’,`0′)dnl Read more …
Source: [click here] Max 30 mins work. However, life is rarely so simple. yum search dkim didn't find anything. So, based on what I could find, I ended up here. Downloaded dkim-filter 2.4.1 and went on an epic voyage of discovery into the RFCs and other stuff. I just want to install, configure and run the thing! Read more ...
