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you don't have to create any new connectors for email between servers. All you need to do is to direct incoming mailflow from internet to exhcange 2016 and add 2016 server as a source server for send connector
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You are correct! for incoming email from internal and external network all works fine, but when i configure relay for application servers it stopping both internal and external<br />
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The question is for internal SMTP relay from other reporting servers to relay on current exchange server.<br />
we have different application servers configure to use our exchange server and send notifications to users.<br />
<br />
Note: same relay connector has been configured on Exchange 2010 and 2016(in co-exist environment), i think it wont affect the traffic.
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just make sure that the internal relay is limited to only the IP-addresses needing to send emails - and make sure that exchange server IPs aren't added to this relay connectors
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For internal relay we have subnets (0.0.0.0/24 or 0.0.0.0/22) included current exchange server subset too.<br />
<br />
Regards
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But we have the same setting in MS Exchange 2010? do you think new setting in exchange 2016 should be different than 2010?<br />
<br />
Regards
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Removed the Exchange Servers network and all worked. thank you.
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<div class="content wysiwyg-content">
In Exchange 2010 and 2016 co-existing environment(migrating from Exchange 2010 to 2016) configured receive connector, in &nbsp;fact leave them default but configured Relay connector(details are in attached image) now i am trying to send email from my exchange 2010 or external domain not getting any email but if i disable this connector(Relay) all works fine.<br />
<br />
Regards<br />
<a href="https://filedb.experts-exchange.com/incoming/2017/03_w13/1154064/EXCHNAGE.jpg" target="_blank" class="file-inline" title="EXCHNAGE.jpg (15 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>EXCHNAGE.jpg</a>
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EXCHNAGE.jpg

In Exchange 2010 and 2016 co-existing environment(migrating from Exchange 2010 to 2016) configured receive connector, in  fact leave them default but configured Relay connector(details are in attached image) now i am trying to send email from my exchange 2010 or external domain not getting any email but if i disable this connector(Relay) all works fine.

Regards

Receive Connector Exchange 2016

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

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