I’ve used Mimecast to do this for free https://community.mimecast.com/s/article/Stationery-Layouts-Inline-Signatures-1998822414 , there are some limitations
Tag: mimecast
Disable or Modify “email security training” In mimecast
This is actually called URL protection in the backend and can be found below
Mimecast Suspicious Message Structure
I have further reviewed this case and the emails are being held due to Suspicious Message Structure, this could be due to reasons like Mail formatting that […]
Mimecast – Relaying from External to External using a forward ( External Relay )
If you setup a Forward for a user to an external user , and a external party email’s that user , then this counts as external to […]
Mimecast sending from another Tenants Domain
Mimecast will actually let you send from another domain you do not own ( will need to open a Support ticket and give a business reason ) Mimecast […]
Using Powershell to Send Emails via Mimecast
You can send emails via Mimecast instead of 365 , so you don’t need a licensed 365 user. Login and enable SMTP Email submissions for that user […]
Mimecast TLS Settings
The receiving party needed details to enable TLS enforcement Mimecast TLS CA CN = DigiCert TLS RSA SHA256 2020 CA1O = DigiCert IncC = USCipher Strength : 256Certificate Key […]
Enforce TLS Communication between 365 Tenant and Mimecast
Create new Inbound ConnectorAdd domain of the client you would like to lock downTick thisAdd Outbound TLS Connector
Mimecast – Application Disabled
When users try and use the Mimecast for Outlook Add-in they login and get Application DisabledMake sure this is tickedRestart Outlook then try againSometimes Mimecast caches Authentication […]
Migrate Mailguard active whitelist to Mimecast managed senders
Both Mailguard and Mimecast have a list of allowed emails for users. When migrating from one platform to another you will need to copy these over.Mailguard does […]
