Connecting to mail on other clients (iphone)

Hello,

I have a server with sentora V1 and all my domains are protected with cloudlare, I set the mx record for the sub domain mail.mydomain.com to redirect to the server IP directly .

I tried to connect to the email I created with sentora on my iphone but it didn't work. It works just fine with the webmail on my server tho.

I tried connecting using both options IMAP and POP with the following settings:
incoming :
server: serverIP , and I tried serverIP:110
username: myemail[at]m8hamedh.ml
password: myCORRECTpassword

outgoing:
server: serverIP , and I tried serverIP:25
username: myemail[at]m8hamedh.ml
password: myCORRECTpassword

(replace 8 with normal low case o)
I just put one of my domains as example but I have a couple of other domains on the same server and it gives the same error with the other domains too. It always refuses to connect.

I use the IP because I tried many times with the domain and mail.domain but it dind't work neither so I thought it might be something wrong with my subdomains but even with the ip it doesn't work

any help?
And thanks in advance