Wednesday , August 12 2020

Antispam

Optimize Antispam Settings in Office 365

Lets see how to optimize anti spam settings in office 365. Anti spam settings can be modified from protection portal of office 365.  by default this service is available for all Exchange online users. Login to https://protection.office.com Threat Management  – Policy – Antispam   Click on edit policy Default Spam …

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Implementing DKIM in IronPort

Lets see how to Implement DKIM Signing using IronPort. You need to enable signing for all domains. In my case i had to do it one by one. So that I can have smooth implementation of DKIM and DMARC I have a lot of business units with a lot of …

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Configuring Mimecast with Office 365

Lets see how to synchronize azure active directory users by providing Azure Active Directory API Permissions with mimecast directory synchronization and configure inbound and outbound mail flow with mimecast. Currently On-Premise Exchange server Configured in Hybrid Mode and Azure AD Connect is Configured with Password hash Synchronization. We will move …

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Enable Opportunistic TLS with IronPort

Enabling Opportunistic TLS on your Anti spam Devices A method which can described as “best effort”. When we configure our anti spam appliance to use the option of opportunistic TLS, each time that the anti spam appliance will try to send E-mail message to the internet , our mail system/anti …

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Change Hostname of IronPort Appliance in a Cluster

ssh to the appliance sethostname newhostname.domain.com commit Choose Network –> IP Interfaces Choose the dataport Enter new hostname Submit and Commit. Change the appropriate DNS in your MX record of your SMTP Domain (Godadddy for example) Contact your IP Provider to change the proper PTR Record (AT&T for Example) If …

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