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451 4.7 0 timeout waiting for client input exchange 2016

This an error is popup after an long time, after an test with telnet on the new server 2016.

220 NedcoExchMigr.nedcofs3.local Microsoft ESMTP MAIL Service ready at Tue, 14 Jul 2020 00:06:17 +0200
helo
250 NedcoExchMigr.nedcofs3.local Hello [192.168.100.152]
mail from:pkasbergen@nedco.nl
250 2.1.0 Sender OK
rcpt to:pkasbergen@nedco.nl
250 2.1.5 Recipient OK
data
354 Start mail input; end with <CRLF>.<CRLF>
dsgfdgfdg
.
250 2.6.0 <9f2ede16-2058-4d95-8660-8e2d0abe2a57@NedcoExchMigr.nedcofs3.local> [InternalId=446676598785, Hostname=NedcoExchMigr.nedcofs3.local] 1580 bytes in 0.103, 14.856 KB/sec Queued mail for delivery
451 4.7.0 Timeout waiting for client input                                        (the timeout is coming after an long time)
Connection to host lost.

I have done the migration to chapter 9 migrate sbs2011 to exchange 2016.

Now i will test if the connection is ok before start the next pages. DNS and migration the mailboxes.

Is this possible an dns problem? The SBS2011 smtp mail input is working properly.

Paul

Paul Kasbergen Paul Kasbergen
Published 07/13/2020 22:33
  • SBS 2011
  • Exchange Server 2016
  • DNS
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Mariette Knap

This has been resolved now, it was a DNS issue. Nothing serious

replied 07/17/2020 13:42
Last Activity 07/17/2020 13:42