On a virtual private server machine (Ubuntu 16.04) which I self-host on DigitalOcean I use an all-default and latest Debian stable with all-default and latest Apache, MySQL and PHP to host my WordPress websites.
Port 25 is unfiltered.
None of the WordPresses is on debug mode.
Each Wordpress website contains one simple contact form (CF7) with name, email, phone and body fields. All latest.
I declared my personal email account for all websites contact-form plugin and ought to test the forms but in testing them with some input and clicking submit I got this general error:
Failed to send your message
I didn't manage to find further data as to why I had this error - any log I checked showed nothing on this.
Reading on this I concluded I need an email proxy by a second email account, but this approach requires me to manage another email account with username and password which I don't want if I don't have to.
I desire to transfer all contact-form inputs from my machine → into my personal email account, but without using an email-proxy like a third email account that will mediate between each CMS and my personal email account.
How can I transfer contact-form inputs into my personal email account without using an email-proxy, in the above stack?