Recently I have installed Wordpress on my nginx server after Installing I'm getting this error
The email could not be sent.
Possible reason: your host may have disabled the mail() function.
While resetting my password. Why this error happened and how to solve this. My server config is Ubuntu 16.04, Nginx 1.12.1 and WordPress 4.7.5.
Follow this guide https://wordpress.stackexchange.com/questions/95016/wordpress-refuses-to-send-mail-your-host-may-have-disabled-the-mail-funct
If you want to solve problems yourself just google the error.
Digitalocean does not block sending emails from droplets by default so don't spread any rumours/lies.
There is no such block in place.
No need to make people open useless tickets since it will delay everyone elses problems more.
It's either his sendmail config, if hes using gmail his ip could be blacklisted which would mean snapshotting and creating a new droplet with the snapshot to get a new ip address.
I am sorry my mistake, I do not mean to spread rumors or lies about DO at all.