Digital Ocean install fails with postgrey package authentication error

[madaroda]

The package installation process that follows time zone setting failed. Here is the first error line I found:

FAILED: apt-get -y -o Dpkg::Options::=–force-confdef -o Dpkg::Options::=–force-confnew install postfix postfix-pcre postgrey ca-certificates

The process continues and finally fails with:

After this operation, 6,368 kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
postgrey
E: There are problems and -y was used without --force-yes

The Digital Ocean vm is: 2 GB Memory / 40 GB Disk / SFO1 - Ubuntu 14.04.4 x64

Easy fix, or destroy and start over?

[tonyp]

I installed my mailinabox on digital ocean as well, however i hadnt run into this issue or error before.

I guess some house keeping questions come to mind
Did you use the command sudo apt-get update prior to running installation?
Are you installing on a vanilla vm?
Which version are you trying to install?

My vm is smaller at 1GB, 30GB, so i dont think space is any problem.

Tony

[madaroda]

I destroyed the droplet and rebuilt a new 2GB from scratch and ran into the exact same issue. So then I tried it it on a 1GB droplet and it installed without a hitch. Go figure.