Able to receive email but unable to to send out

    Hi im able to receive email from google and but unable to send email. My mail log saying connection time out. Clean install nothing has been touch for postfix and dovecot


    Using
    Ubuntu 16.04 Server amd64
    running under Proxmox virtual environment


    Checking from MXtoolbox saying


    SMTP Reverse DNS Resolution Reverse DNS Resolution - No PTR Record found More Info
    SMTP TLS Warning - Does not support TLS. More Info
    SMTP Connection Time 1.193 seconds - Good on Connection time
    SMTP Open Relay OK - Not an open relay.
    SMTP Transaction Time 4.168 seconds - Good on Transaction Time


    Which part I'm missing? and where can i start looking at. I'm beginner for this. Please help me out. <3
    been wondering for week and unable to get this done




    Report from /var/log/mail.log

    oops sorry missing some part of posting


    Im using IMSCP ver 1.3.5
    Im running behind NAT port for 25 and 143 are opened


    Firewall inactive



    MXtoolbox said that


    SMTP Reverse DNS Resolution Reverse DNS Resolution - No PTR Record found (Yellow)
    SMTP TLS Warning - Does not support TLS. (Yellow)
    SMTP Connection Time 1.188 seconds - Good on Connection time (Green)
    SMTP Open Relay OK - Not an open relay. (Green)
    SMTP Transaction Time 4.131 seconds - Good on Transaction Time (Green)

    if is not accepting from home server. Any idea to get mail work beside than that? or using external mail or something :-/:-/

    As a test you can DMZ your server IP in LAN router just to make sure port blocking is not your issue.



    FYI, Gmail, Yahoo and Hotmail do allow to setup a white-list (I do not remember exactly how to do that as it has been several years since I set all that up) to receive mail from a private network. I can send to most of the major email providers since white-listing my services. Most likely, your email will be sent to the users spam box even after setting up a white-list at each service, so be aware of that ... You can also setup your IP and domain with services such as spamhaus, etc to verify you are not a spammer.


    In order to send email and get recognized by the big players without the fuss, you have to pony up the dough for a business class IP ...


    Good Luck

    “Life is all an Elaborate Hoax”

    Quote from longsyee

    if is not accepting from home server. Any idea to get mail work beside than that? or using external mail or something :-/:-/


    Until you will not be able to change your revdns (and 100% of residential ISP's doesn't allow to do that) your messages will be not delivered to most receivers. You can use something like smarthost, which will send all your messages through external mail server, or just use classical external mail server option in i-MSCP (you can even set it to work with gmail).