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Lost Connection During EHLO

Gandizz
Mail sent to certain domain failed with message,
lost connection with X.X.X.X while performing the EHLO handshake
While receiving from that same domain have no issue.

Please advise how to solve this


This thread was automatically locked due to age.
  • 0
    Welcome to the Sophos User BB!

    Please show some corresponding lines from the SMTP proxy log.

    ----------
    Sophos user, admin and reseller.
    Private Setup:

    • XG: HPE DL20 Gen9 (Core i3-7300, 8GB RAM, 120GB SSD) | XG 18.0 (Home License) with: Web Protection, Site-to-Site-VPN (IPSec, RED-Tunnel), Remote Access (SSL, HTML5)
    • UTM: 2 vCPUs, 2GB RAM, 50GB vHDD, 2 vNICs on vServer (KVM) | UTM 9.7 (Home License) with: Email Protection, Webserver Protection, RED-Tunnel (server)
  • 0
    Where to check the SMTP proxy log ?

    We are using Sophos Email Appliance ES1100 v3.9
  • 0
    This forum is only about the Sophos UTM, no other products are discussed here.

    Please check Sophos Community instead.

    ----------
    Sophos user, admin and reseller.
    Private Setup:

    • XG: HPE DL20 Gen9 (Core i3-7300, 8GB RAM, 120GB SSD) | XG 18.0 (Home License) with: Web Protection, Site-to-Site-VPN (IPSec, RED-Tunnel), Remote Access (SSL, HTML5)
    • UTM: 2 vCPUs, 2GB RAM, 50GB vHDD, 2 vNICs on vServer (KVM) | UTM 9.7 (Home License) with: Email Protection, Webserver Protection, RED-Tunnel (server)
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