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Many ways to secure email delivery. One of them is use TLS connection/encrypted when sending email. The encryption connection will make connection between email server more secure. This guidance will explain step by step how to check smtp outgoing already use encryption or not. # Checking Header Please try to send email to Gmail or Yahoo and check ..

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I have condition in my clients where all outgoing email from their server do relay into Relay server. This caused usually Public IP got blacklisted by RBL. I am perform the relay configuration by use this guidance : https://imanudin.net/2014/09/18/how-to-configure-outgoing-smtp-authentication-on-zimbra-8-5/ All email to outside well fine until found problem when sending email to some clients and getting error “too ..

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After set COS for all users as described on previous article, overall the value/features on COS has been rewrite for all users. However, i am still get default value for some users such as quotas. Quotas for some users still using default value (unlimited). if checked via Zimbra Admin | Manage | Account | right click and select ..

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