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David_M's avatar
David_M
Icon for Cirrostratus rankCirrostratus
May 25, 2022

Bigip mgmt port using tls 1.0 for smtp connection

Hi,

We running 15.1.5.1

We did the smtp config from GUI and used the test button - we usue mgmt port for this config - it keeps using tls 1.0 but our mimecast server supports tls 1.2, how can i make the mgmt port use tls 1.0 for this connection?

The client hello shows it using tls 1.0.. i cant find any option to change this!

application delivery
smtp
tls
  • Patrik_Jonsson's avatar
    Patrik_Jonsson
    Icon for MVP rankMVP
    Jul 29, 2022

    Hi!
    Have you checked the client cipherlist with tcpdump? The client suggests ciphers and the server chooses according to it's cipher priority config. Sadly it would seem like sSMTP 2.64 is used and a quick Google says it only supports TLS 1.0.

    Kind regards,
    Patrik