Looking for suggestions / advice on how to handle notification email for my homelab. It seems most systems / appliances / devices etc can support email notification and I would like something a bit better than using my personal gmail account. I read about an option of using postfix through sendgrid/twilio and that looks promising, but in an attempt to spin up postfix via docker compose plugin on my OMV ... I saw a port conflict. This led me to learn that omv actually already has postfix installed.
I guess I have three options 1) configure the installed postfix to relay through my sendgrid account via api and point my homelab stuff at the omv for SMTP 2) host the docker on non standard ports and "hope" all my stuff supports non-standard smtp ports. 3) host the docker on non-standard ports, config OMV postfix to use the dockerized instance, point my stuff to the OMV instance.
Any better ideas or advice is appreciated.