I have two 2013 servers in Hyper V. Both has CAS and MBX roles installed on them.
Initially when exchange was setup, mail flow was working fine. Now internal and external does not work.
Emails getting stuck in drafts. When I do telnet for the domain, telnet domain.com 25, it just says connecting to domain... and freezes.
But I can directly telnet to the exchange server , telnet exchangeipaddress 25,
220 exchangeservername.domain.com Microsoft ESMTP MAIL Service ready at Wed, 9 M
ar 2016 13:42:23 +0530
ehlo
250-domain.com Hello [10.--.--.--]
250-SIZE 37748736
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-STARTTLS
250-X-ANONYMOUSTLS
250-AUTH NTLM
250-X-EXPS GSSAPI NTLM
250-8BITMIME
250-BINARYMIME
250-CHUNKING
250 XRDST
mail from: test_m@domain.com
250 2.1.0 Sender OK
rcpt to:test_m@domain.com250 2.1.5 Recipient OK
data
354 Start mail input; end with <CRLF>.<CRLF>
test.
.
250 2.6.0 <46645252c79b4876a99838e17cf0a9bf@exchangename.domain.com> [Inte
rnalId=13357348290653, Hostname=exchangeservername.domain.com] Queued mail for d
elivery
But the mail doesnot get delivered.
1. I tried to set the default settings for all the connectors.
2. Under Servers, Changed DNSlookups to DNS server IP.
3. Test-Mailflow says success, test-mailflow EXCH1 -targetmailboxserver EXCH2 says *FAILURE*
Help !!! guys