On boot, I get the following message:

Starting Postfix Mail Transport Agent: postfix.
Starting Mail Transport Agent (MTA): sendmailNo make, you'll have to rebuild your databases by hand 
:(                                                                                                  
Not configured, not started. failed!                                                                
.

Even though I've removed Sendmail and installed Postfix... there is obviously some trace of sendmail left, any idea where I should look to fix this?

Thanks,

Paul

Which distribution are you running?

What procedure did you use to install Postfix?

What procedure did you use to uninstall sendmail?

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Debian, used the following HowTo as a basis for install:

http://www.debuntu.org/how-to-virtual-e ... nd-dovecot

And used apt to try to uninstall sendmail via apt-get remove sendmail

Looks like the real sendmail meat is in a few different packages, which are depended on by the "sendmail" metapackage: http://packages.debian.org/lenny/sendmail

So, try:

apt-get autoremove
--and/or--
apt-get remove sendmail-base sendmail-bin sendmail-cf

That *should* hopefully get it out of there. Also check:

dpkg -l sendmail\*

just in case something got missed.

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Apt still reporting things had been removed, but dpkg said that some config files were lying around, purging those and rebooting cleared up the issues, thanks for the help!

Paul