User emails stuck in spool (Latest build as of 7/5/17)

[2017.07.05] 22:19:08 [60836] Starting local delivery to REMOVED
[2017.07.05] 22:19:08 [60836] Exception: Object reference not set to an instance of an object.
[2017.07.05] 22:19:08 [60821] Starting local delivery to REMOVED
[2017.07.05] 22:19:08 [60821] Exception: Object reference not set to an instance of an object.
[2017.07.05] 22:19:08 [60806] Starting local delivery to REMOVED
[2017.07.05] 22:19:08 [60806] Exception: Object reference not set to an instance of an object.
[2017.07.05] 22:19:08 [59456] Starting local delivery to REMOVED
[2017.07.05] 22:19:08 [59456] Exception: Object reference not set to an instance of an object.

About a bazillion of these entries (for a single user) in the delivery logs. Emails are backing up in the spool. Webmail still works, just emails are not delivering, never seen this type of error for SM.

Roger Everton Replied

7/5/2017 at 10:38 PM

I am facing the same dilemma.

Upgraded to 15.7.6390

Every email sent from the server is stuck.
I had a SmarterTools Tech connected to it today and he asked me to restart the server and I have not seen nor heard from him since!

My errors are a bit different.
First thing I notice is the the "Next Attempt" is set to when it was sent. Which makes no since should I just wait 24 hours and see if it goes? I tried resetting the Server Clock and mine but all the mail sits in the spool. Sometime I can force the delivery sometimes it will not budge.

Mine also seems to be related to the TLS handshake. The mail transaction seem to break down at that point. It will negotiate on IP4 then try switching to iP6 then just crash.

Any help would be appreciated...

Delivery Log Snippet:
--------------------------
2017.07.06] 01:17:33 [30002] Initiating connection to 98.136.216.25
[2017.07.06] 01:17:33 [30002] Connecting to 98.136.216.25:25 (Id: 14)
[2017.07.06] 01:17:33 [30002] Binding to local IP 68.15.157.104:0 (Id: 14)
[2017.07.06] 01:17:33 [30002] Connection to 98.136.216.25:25 from 68.15.157.104:1135 succeeded (Id: 14)
[2017.07.06] 01:17:34 [30002] RSP: 220 mta1167.mail.gq1.yahoo.com ESMTP ready
[2017.07.06] 01:17:34 [30002] CMD: EHLO smtp.medstaffingsolutionsusa.com
[2017.07.06] 01:17:34 [30002] RSP: 250-mta1167.mail.gq1.yahoo.com
[2017.07.06] 01:17:34 [30002] RSP: 250-PIPELINING
[2017.07.06] 01:17:34 [30002] RSP: 250-SIZE 41943040
[2017.07.06] 01:17:34 [30002] RSP: 250-8BITMIME
[2017.07.06] 01:17:34 [30002] RSP: 250 STARTTLS
[2017.07.06] 01:17:34 [30002] CMD: STARTTLS
[2017.07.06] 01:17:34 [30002] RSP: 220 Start TLS
[2017.07.06] 01:17:48 [30003] Exception: Authentication failed because the remote party has closed the transport stream.
[2017.07.06] at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
[2017.07.06] at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
[2017.07.06] at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
[2017.07.06] at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
[2017.07.06] at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
[2017.07.06] at RelayServer.Clients.SMTP.ClientConnectionSync.InitiateSsl(Boolean validateAllCerts)
[2017.07.06] at RelayServer.Clients.SMTP.SmtpClientSession.#VG(Boolean #5Ni)

Shaun Peet Replied

7/6/2017 at 5:01 AM

I wonder if it has to do with outbound IP4 settings? I had an issue with that a couple weeks ago:

https://portal.smartertools.com/community/a89205/sm16-june-16-update-undeliverables-system_net_sockets_socketexception-in-logs.aspx

echoDreamz Replied

7/6/2017 at 6:16 PM

They released a fix for this. Something to do with a null email address on a contact.

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