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Let’s take a look at Mailflow with Exchange 2016. Mail flow changed from the previous versions and consists of transport pipelines.
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Let’s take a look at a scenario where Orgn A (abc.com) acquired Orgn B (123.com) and you are tasked with setting up Orgn A’s exchange server to accept all emails from the internet for both the Org’s
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Recently worked on a case recently where the customer werent able to send emails to few users who are on UNIX. They do not have the mailboxes on Exchange but have them on UNIX
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As we all know A Receive connector is responsible for all SMTP inbound connections from an external source, client/partner or another Exchange server. (more…)

Test-Mailflow is a cmdlet available in Exchange 2013. This command allows us to test the delivery of mails between two mailboxes. The test will be performed using the system mailbox. Test-Mailflow cmdlet basically tests the mail submission, transport, and delivery. This command is used to verify that the system mailbox on one Mailbox server can successfully send a message to the system mailbox on another Mailbox server. By running the command Test-Mailflow, we can find if the mail flow was successful or not. Along with the information we can also see the message latency info, which will be useful in finding out slow mail delivery due to server or network issue.

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Today I wanted to test if I can create a send connect to use CAS and block one CAS server.
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Today I got 2 issues which are interesting so I am sharing the experience.
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Today while configuring an Edge transport, I got the below error. I am sharing the resolution to help others.
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We discussed this error earlier here https://msexchangeguru.com/2013/11/23/451-4-4-0-dns-query-failed-the-error-was-smtpsend-dns-nonexistentdomain-nonexistent-domain/
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Another issue came on way so sharing my experience. This time it is related to matching of DNS records. (more…)

Recently I have been working on a Migration deployment and Lets have a look on the import points to check during mail routing gateway change. (more…)

Recently I was working on my EOP environment and our emails started going to the spam quarantine. I could not find fix over the internet so thought of sharing how I fixed it. (more…)

Edge Transport Server has protected many Exchange Infrastructures and we liked to rely on Microsoft since the release of Anti-spam in Exchange 2003 SP2. (more…)

Microsoft Virtual Tech Conference is back and will held on March 19 2014.

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Unable to Export Edge Subscription file after DNS Suffix Change of the DMZ Edge Server.
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This blog post is to address a specific issue with mailflow and DNS query (more…)

This is a very common issue but I just wanted to highlight the component which supposed to be changed here. (more…)

Recently while helping on technet I identified this issue which is very rarely seen so I thought of sharing it here. (more…)