==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.6
- Linux/BSD distribution name and version:  Ubuntu 14.04 LTS
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro?
- Related log if you're reporting an issue:
====

Please I have successfully installed my iredmail created a domain for my email services. I can send emails between the accounts on the server and send mails to gmail and yahoo accounts but I can't receive emails from yahoo or gmail accounts.

What could be the problem?

Here is the content of my configuration file

upstream backend-odoo{
    server 127.0.0.1:8069;
}
   
server {
    server_name mgbcomputers.com;
    listen 80;
    add_header Strict-Transport-Security max-age=2592000;
    rewrite ^/.*$ https://$host$request_uri? permanent;
}

server {
   
    listen 443 default;
   
    #ssl settings
    ssl on;
    ssl_certificate /etc/nginx/ssl/server.crt;
#    ssl_certificate /etc/ssl/certs/iRedMail.crt;
    ssl_certificate_key /etc/nginx/ssl/server.key;
    keepalive_timeout 60;
   
    root /var/www/html;   #added from iredmail file
    index index.php index.html; #added from the iredmail file

    # proxy header and settings
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forward-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_redirect off;

    # odoo log files
    access_log /var/log/nginx/odoo-access.log;
    error_log /var/log/nginx/odoo-error.log;
   
    # increase proxy buffer size
    proxy_buffers 16 64k;
    proxy_buffer_size 128k;
   
    # force timeouts if the backend dies
    proxy_next_upstream error timeout invalid_header http_500
    http_502 http_503;
   
    # enable data compression
    gzip on;
    gzip_min_length 1100;
    gzip_buffers 4 32k;
    gzip_types text/plain application/x-javascript text/xml text/css;
    gzip_vary on;
   
    location / {
        proxy_pass http://backend-odoo;
    }

    location ~* /web/static/ {
        # cache static data
        proxy_cache_valid 200 60m;
        proxy_buffering on;
        expires 864000;
        proxy_pass http://backend-odoo;
    }

    location /longpolling { proxy_pass http://backend-odoo-im;}

    location /mail/ { root /var/vmail/vmail1; }   # Added by Lekan for iredmail

    # Web applications.  Added from iredmail file
    #include /etc/nginx/templates/adminer.tmpl;    #Added from iredmail file
    include /etc/nginx/templates/roundcube.tmpl;   #Added from iredmail file
    include /etc/nginx/templates/sogo.tmpl;    #Added from iredmail file
    include /etc/nginx/templates/iredadmin.tmpl;    #Added from iredmail file
    include /etc/nginx/templates/awstats.tmpl;    #Added from iredmail file

    # PHP applications. WARNING: php-catchall.tmpl should be loaded after
    # other php web applications.
    include /etc/nginx/templates/php-catchall.tmpl;   #Added from iredmail file

    include /etc/nginx/templates/misc.tmpl;   #Added from iredmail file
}

upstream backend-odoo-im { server 127.0.0.1:8072;