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Remote Socket Error Exchange 2013 SMTP Receive LOG

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I am getting remote socket error messages in Exchange SMTP Receive log. Can anyone guide me how to trace & resolve the issue.

My Oracle DB logs also show 421 service not available error.

Br,

AA


Issue in send & receive mail from exchange to gmail

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 I have install exchange server 2013 with CAS & MailBox , from where and how i enable to send & receive mail to and from contoso.my domain name is abc.com and all domain dns and exchange server i am installing it on vm ware conncted through bridge connector form physical machine that is connected through the internet.

I have attached here Screenshot of send connector,policy and accepted domain please help me out.Please Also tell me  if any configuration is needed.



After creating a new default throttling policy, will it apply all previous users also or only new users which will be created??

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I am using exchange 2010. Have planned to create a new throttling policy and make it default with customize setting.

Will this be applied for only new users or old users also where already default exchange throttling policy applied.

I want only new users to be applied on this default, do not want any change for old users.


Arif

Mail Showing has delivers but not received to user inbox

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Hi,

We have have issue with Mail delivery issue, user does not seem to have copy of mail in his inbox but exchange ecp delivery report is showing the mail has been successfully delivered to recipient user inbox. Both the send and recipient in same domain but mailbox hosted on 2 different servers in DAG setup. This is internal mail send.

Mail Setup details are

4 Exchange mail Servers hosting 21 Database in DAG. All the 4 hosts are running mailbox role only. Exchange Server 2016 Enterprises CU10 on windows server 2016 Standard.

Exchange host 1 (recipient Mailbox DB active)

Exchange host 2

Exchange host 3 

Exchange host 4 (Send Mailbox DB active)

Below is Delivery Report (Names, email id and Server names have been removed) 

Delivery Report for  UserName‎(useremail ID)‎
Pending
3/4/2019 8:54 AM Exchangehost3.domain.local
The message has been transferred from Exchangehost3.domain.local to Exchangehost2.domain.local.

3/4/2019 8:54 AM Exchangehost3.domain.local
The message has been transferred from Exchangehost3.domain.local to Exchangehost2.domain.local
Delivered
3/4/2019 8:54 AM Exchangehost2.domain.local
The message was successfully delivered.

Message Tracking for Exchange host 1

Timestamp                     EventId          Source                Sender                Recipients           MessageSubject
---------                         -------             ------                  ------                  ----------             --------------
04-03-19 8:54:01 AM    HARECEIVE        SMTP                 sender-ID...          recipient-ID...       email-subject
04-03-19 8:56:04 AM    HADISCARD        SMTP                sender-ID...          recipient-ID...       email-subject
04-03-19 8:54:02 AM    DELIVER             STOREDRIVER   sender-ID...          recipient-ID...       email-subject

Message Tracking for Exchange host 2

Timestamp                    EventId              Source        Sender                    Recipients           MessageSubject
---------                        -------                 ------           ------                    ----------              --------------
04-03-19 8:54:01 AM    HAREDIRECT       SMTP           Sender-ID...           recipient-ID...       email-subject
04-03-19 8:54:01 AM    RECEIVE             SMTP           Sender-ID...           recipient-ID...       email-subject
04-03-19 8:54:02 AM    AGENTINFO        AGENT         Sender-ID...           recipient-ID...       email-subject
04-03-19 8:54:02 AM    SEND                 SMTP           Sender-ID...           recipient-ID...       email-subject


Message Tracking for Exchange host 3

Timestamp                     EventId          Source              Sender                 Recipients           MessageSubject
---------                         -------              ------                ------                  ----------            --------------  
04-03-19 8:54:01 AM    NOTIFYMAPI     STOREDRIVER   Sender-ID...           {}
04-03-19 8:54:01 AM    RECEIVE          STOREDRIVER   Sender-ID...           recipient-ID...       email-subject
04-03-19 8:54:01 AM    SUBMIT           STOREDRIVER   Sender-ID...           recipient-ID...       email-subject


We trying to find what happen to the email and why the user didnt get mail.

regards

Irfan

Malware Functionality in MS Exchange 2013

Random -,,Remote(SocketError) for App Relay

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Hi team,

On my exchange 2013 server there is a receive connector configured for app relay server (out of many). This is able to connect and send mails but however, out of no where, the app server is unable to send mails at randomly. On the exchange SMTPReceive logs, I can see the below;

<EXCH>-MAIL1\SMTP Relay,08D6A23123A5E266,0,<ExchangeIP>:25,<SenderIP>:3915,+,,
<EXCH>-MAIL1\SMTP Relay,08D6A23123A5E266,1,<ExchangeIP>:25,<SenderIP>:3915,*,SMTPSubmit SMTPAcceptAnyRecipient SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
<EXCH>-MAIL1\SMTP Relay,08D6A23123A5E266,2,<ExchangeIP>:25,<SenderIP>:3915,>,"220 <EXCH>-mail1.domain.com Microsoft ESMTP MAIL Service ready at Wed, 20 Mar 2019 23:04:57 +0830",
<EXCH>-MAIL1\SMTP Relay,08D6A23123A5E266,3,<ExchangeIP>:25,<SenderIP>:3915,-,,Remote(SocketError)

However, other app servers connections are successful at this time. 

  1. I want to know why is this occurring?
  2. Which end (app server or exchange) is causing the Socket error

Any clues would be great.

Thank you.

Jude.

DNS timeout

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After running a hybrid deployment wizard between my exchange on-prem and Exchange online. I cannot reach the online protection Microsoft server and I found that I cannot resolve Microsoft server (hasib1.mail.onmicrosoft.com) and it gives me DNS request timeout although my internal DNS forwarders configured correctly and do not have problems access <g class="gr_ gr_5 gr-alert gr_gramm gr_inline_cards gr_run_anim Grammar only-ins replaceWithoutSep" data-gr-id="5" id="5">internet</g>.

Filter / Let attachments be approved if they don't have an extension

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Hi,

we have rules to filter specific extensions to be approved by admins, before they are delivered. 

That works as expected. 

But how do I filter files, that do not have any extensions (or deny them). 
Lately those appear to be delivered, but they are usually never good attachments, so I want to block them or have them approved. 

I didn't find any solution, as I can say *.zip, but this is just like

"fileabcde" instead of "fileabcde.zip". 

Probably you can help. 

Thanks

Patrick 


Could Exchange Server support the encryption strength (Cipher: DHE-RSA-AES256-SHA)

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Dear Support, 

Could you help to check if Exchange servers (e.g. Exchange 2013 and Exchange 2010) can support the encryption strength (Cipher: DHE-RSA-AES256-SHA)?

Thanks!

Best Regards, 

Daniel

Is it possible to change an alias into a public folder?

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I have an alias email address that is set up to include several people for work but only 2 people have been given access to check the inbox for that alias. I'm looking to change the alias into a public folder so that no one is attached to the address and it only allows to the specific person or persons to see the reply instead of everyone. Can an alias email address be turned into a public folder?


DNS timeout

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After running a hybrid deployment wizard between my exchange on-prem and Exchange online. I cannot reach the online protection Microsoft server and I found that I cannot resolve Microsoft server (hasib1.mail.onmicrosoft.com) and it gives me DNS request timeout although my internal DNS forwarders configured correctly and do not have problems access <g class="gr_ gr_5 gr-alert gr_gramm gr_inline_cards gr_run_anim Grammar only-ins replaceWithoutSep" data-gr-id="5" id="5">internet</g>.

SMTP Error 421 Service not available Exchange 2013 with CAS NLB

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i have an application configured to relay email through exchange 2013 CAS on a custom relay connector. Application successfully send email whole day but with some missed entries show error code 421 service not available in orcale based application log.

what could be the issue.

Br,

AA

SMTP transient error: 421 Service not available

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I am facing interim issue with my oracle DB. where smtp relay is working for 99% of emails sent but only 1% being sending failed with error "SMTP transient error:421 Service not available". I am unable to trace any log entry for missed emails at exchange end in smtp receive logs.

please guide how to trace and resolve the issue. both my server are available not network connectivity issue. ping telnet trace won't show any outage or disconnect.

Br,

AA

Possible ways to prevent email spoofing at MIME level

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Need your help. Recently we are getting so many SPAM emails to sent from our own email address. We have GFI Mailessentials deployed an Edge Transport server. But GFI does block spoofing at the SMTP level and doesn't block spoofing at the MIME level. Could you recommend the possible ways to prevent email spoofing at the MIME level? Thanks in Advance !!!

Rajakumar

unable to receive emails from office 365 TLS 1.2

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Hi, i have a bit of an issue one of my clients have moved from exchange to office 365 and using TLS 1.2 protocol, while us still being on exchange and not supporting 1.2  as yet what can our clients that we can receive their emails, as we have other clients whose emails are coming through even though they are on 365 







Delay in Internal Mail Delivery

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Hi,

We have an Exchange 2013 DAG setup as below in our environment .

Primary Site - Node1 & Node2

DR Site - Node3

The above servers are setup with multi role (Mailbox and CAS)

The issue is that slow network connection to DR site delay the internal mail delivery...if the copy queue to DR site increases, then the internal mail delivery delays.

DR replication should not affect the mail delivery (both internal and external), but its strange in our case.

Please help to resolve the issue.

Regards,

Sridhar

Outbound emails from one specific email address blocked by Exchange 2013

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Hi

We have a hybrid environment Exchange Online and are using Exchange 2013 as hybrid server. We have an application that submits emails to Exchange using SMTP and sends emails from noreply@smtpdomain.com. Since almost half of our user base is already in Exchange Online, many of these emails which are generated on-premises need to be routed to Exchange Online. This configuration has been working for months. On 24/06/2014, the emails from this application stopped getting delivered. 

On examination of message tracking logs, I found SMTP FAIL events - excerpt below.

ConnectorId             : Outbound to Office 365
Source                  : SMTP
EventId                 : FAIL
InternalMessageId       : 39560943768623
RecipientStatus         : {[{LRT=};{LED=550 5.1.8 Access denied, bad outbound sender};{FQDN=};{IP=}]}

Doing a search for the error in recipient status did not return anything but doing a search for "access denied, bad sender" did return results that suggested a scenario when a user in Exchange Online would be prevented from sending outbound email after having been identified as sending spam - see http://technet.microsoft.com/en-GB/library/dn458545(v=exchg.150).aspx

It seems our on-premises Exchange 2013 server has enacted a similar block on our noreply address which sends out a lot of emails. I have been able to confirm that if the 'from address' is changed to something like noreply123@smtpdomain.com, all emails from the application get delivered successfully.

I now need to find out how I can unblock our noreply address so these emails can be sent with the original from address.

Appreciate all help I can get on this one.

Delay from office 365 to On-Prem

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I currently have a Hybrid setup with Office 365 with students in the cloud and teachers On-Prem. Lately i have been noticing issues with O365 users sending emails to On-Prem. O365 Mail can sometimes take up to 2 hours to 2 days to be received On-Prem. 

I have opened a ticket with Office 365 Support and they believe the error is "When Office 365 try to send the email to on-prem, the “Defer” happened with the error {LED=450 4.4.317 Cannot connect to remote server [Message=451 4.4.0 Socket error ConnectionReset]"

They are unable to continue to resolve my issue because its a Hybrid scenario.

Any help would be appreciated. 

Restricting one external domain to send email to internal distribution group

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I currently have a internal distribution group which can receive emails from internal user only. How do i configure mail flow so that that distribution group can continue receiving emails from internal senders and one particular external domain

Enable DKIM - Exchange 2010

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Hi 

We are having Exchange 2010 environment with Proofpoint SPAM/Mailgateway. We need to enable DKIM for our environment.

How can we achieve this? Please advise.

Thanks.,

Mr.POP

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