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Email does not get through

Chriz

Hello,

a sender does not come through by email.

There are no entries in the quarantine or data control report either.

So Sophos never received it.

The sender gets the following message:

Hi. This is the qmail-send program at *.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<*@*.com>:
3.123.126.251 does not like recipient.
Remote host said: 550 5.7.1 XGEMAIL_0008 Command rejected
Giving up on 3.123.126.251.

What else can we do?



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  • 0

    Hello ,

    Thank you for reaching out to the community, This happens because the forwarded email contains the original sender's HEADER FROM. Since Sophos Central Email is a SaaS solution and it is shared by many tenants, it needs to have a way to determine which emails are for your organization. The way it does this is by using the HEADER FROM email address. If the domain here is not one of your configured domains AND the email address is not a MAILBOX on your Central account, you will get a reject message. You should look into other options such as bypassing Central Email for auto forwarded emails or doing some HEADER FROM rewriting.

    If you are using exchange online - https://5cuc.short.gy/EYOPPD

    Thanks & Regards,
    _______________________________________________________________

    Vivek Jagad | Team Lead, Global Support & Services 


    Sophos Community | Product Documentation | Sophos Techvids | SMS
    If a post solves your question please use the 'Verify Answer' button.

  • 0 in reply to Vivek Jagad

    What exactly should I write to the supplier now? He gets this error when he sends us an email! Is it him or us (sophos).

  • 0 in reply to Chriz

    Chriz, are you sure the recipient has a valid mailbox in your organization? The sender is sending to user@yourcompany.com there must be a valid mailbox configured in Central for user@yourcompany.com or an alias of an existing mailbox. If not it will be rejected. If there is a valid mailbox the message should be accepted and then inspected for spam, malicious content etc

    If you are certain there is a valid mailbox please log a support ticket so we investigate further.

  • 0 in reply to Tom Foucha

    I copied the recipient address from the error message and sent email myself. This works. Support has everything I have.

  • 0 in reply to Chriz

    ok thanks for confirming and as Vivek noted if this the results of an forward where it doesn't change the from header it will be blocked as a relay attempt. 

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