Issue help with emails

[deltavirtual]

I have been trying to set up my email system but it is saying port TCP 25 is blocked in the firewall. I have added it to the firewall and it is still saying it is blocked. Can someone help me please

 

[scsa20]

Most ISPs and hosting providers blocks port 25 because of spam. You will need to ask your provider to unblock it (usually they would ask you why and sometimes they will ask if you have any kind of antispam set up to prevent spamming).