smtp messages stope sometimes
hello,
i am using my zoho account smtp information to send emails through the website, it works fines sometimes and sometimes it doesn't work at all , it stays for like 2 hours not sending anything , till now all the emails that could be sent throught it doesn't exceed 80 emails max but this is a real-estate rental website so it can get more messages, so is this a limit that i could change, or is this something related to my server, i am using digitalocean
Best Regards,
Mayada