Are the users on their side getting any error messages, returned email, timeout, etc?

Do you know what their DNS servers are, could be a DNS issue?

Do you have any devices in front of your server?

On 5/22/2019 3:24 AM, Chandran Manikandan wrote:
Hi Eric,

I have checked in logs of above mentioned, its not reaching our server. I told sender to check their server administrator if they blocked our server IP.
But they said it was no issue on their side.
So how do i resolve this?
The sender side is not supporting us instead the user pushing me to check my server. I have keep on checked my server logs maillog, smtp,spamdyke, there is no domain or ip address or user email.
Please advise.

On Thu, May 16, 2019 at 9:26 PM Eric's mail < <>> wrote:

    Is the email hitting the SMTP server? Check in
    /var/log/qmail/smtp/current to see if connection is being made.
    Also check in /var/log/maillog for spamdyke issues.

    Do you have any devices in front of your mail server?

    Get Outlook for Android <>

    On Thu, May 16, 2019 at 5:49 AM -0600, "Chandran Manikandan"
    < <>> wrote:

        Hi Folks,

        We are facing one issue with our email server.
        Whenever emails sent from sender to our domain it's not
        getting to our mailbox.
        I have added sender email and domain into my server
        whitelist_ip, senders,rdns file in spamdyke folder.

        They are getting below message when they sent to our domain.

        4.4.2 Bad connection Timed out
        5.7.7 Delivery Expired(Message too old) timeout.

        I am running pdns-recursor service and configured nameserver in /etc/resolv.conf

        I am facing this issue from this sender only.

        Could any one help me.

-- *Thanks,*
        *System Administrator*

*System Administrator*

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