Please follow naming standards for linux packages

[nycmoma]

Current naming of deb omi package: omi-1.6.8-1.ssl_110.ulinux.x64.deb

which basically means:
pkg name: omi-1.6.8-1.ssl
version: 110.ulinux.x64
arch: nope

For Debian packages it should be:
<package-name>_<epoch>:<upstream-version>-<debian.version>-<architecture>.deb

please put '_" between name and version correctly, also consider to add a proper architecture tag "amd64"
https://www.debian.org/doc/manuals/debmake-doc/ch05.en.html#native

Dpkg sees this file as omi_1.6.8.1_amd64 which should be it's file name until you extend the version.
omi_1.6.8.1_amd64.deb