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zen.spamhaus.org not rejectin' mail on exchange 2013 edge
Hi guys.Need some help with investigation why RBL list on exchange 2013 (zen) did not reject SPAM.Spam was sent to a user in our organization although that IP is blacklisted by zen...
View ArticleCannot Send/Receive email externally.
Setup two AD Controllers and so far one EX10 SP3. All running on top of Hyper-V 2012 r2. Routing email internally is fine, but cannot get email to send or receive from external sources.Doubled check...
View ArticleX-MS-Exchange-Organization-AuthMechanism: possible values
Hi,I am looking for the possible values and their description for the header calledX-MS-Exchange-Organization-AuthMechanism:This X-header specifies the authentication mechanism for the submission of...
View Articlesorry, invalid HELO hostname (#5.7.1) error when sending email to...
Hi Experts,Our emails are failing to deliver to this domain rediffmail.com with below-returning message- f5mail-147-231.rediffmail.com rejected your message to the following email...
View ArticleOriginating IP Address Question POP vs. Exchange
Hello, got emails bounced back from a receivers domain because of a "lockout policy" from domain or IP address...here is the question: If the sender connects to Exchange to send POP mail then their...
View ArticlePossible Spoofing
Hi guysI have a situation where at this stage, 4 users are receiving an email from themselves containing false marketing content. It basically states persons needed to do work remotely for a large...
View ArticleExchange 2013/2016 - Blocking recipients that are not listed in the global...
I have the following enabled:"When the RecipientValidationEnabled parameter is set to $true, the Recipient Filter agent blocks messages addressed to recipients that don't exist in the...
View ArticleMeassages delayed to gmail.com
All messages to gmail.com are delayed in the queue(400 4.4.7) and ultimately dropped. sometimes the mail will get delivered a day or two later but most of the time there is an NDR sent to the sender....
View ArticleMail backlogged and queued from spam filter appliance to Exchange 2013 -...
Hello,We have a spam filtering appliance in front of Exchange that is Internet facing, thus all mail to Exchange server is coming from this appliance's IP address. I'm starting to see backlogged mail...
View ArticleCannot access Exchange 2010, nor 2013 externally.
Today, I switched from Home Comcast internet service to Comcast Business with their hardware. Since the switch, I've been unable to access any of my end-points for Exchange 2010 and 2013. But the funny...
View ArticleMicrosoft Filtering Management Service service can't start with error...
Hi Microsoft and experts in the form,My two Exchange 2013 CU8 server Exchange transport service failed to start due to the dependency Microsoft Filtering Management Service stopped. The error message...
View ArticleIncoming mail getting stuck on Edge Server with 451 4.4.0
451 4.4.0 smtpsend.suspiciousremoteservererror; remote server disconnected abruptlyTried every solution possible but still getting this error. The mail flow has been working fine for a few months.
View ArticleExchange Online mail forwarding to other users
I want to forward mail to a lot of user. I have done with rules but mail forward to all users with subject "fw: mail subject". I do not wanna this style. Mail forward to all users with orjinal subject...
View ArticleReceiving email issue
Hello,i have problem cannot receive emails from some domains i don't know how many domain , but daily receiving complain from users cannot able to receive email from domain. today i check the...
View Articleouting mail delay
Team,We observe one of the mail got delay while going outside the organization. while analyzing the logs we observe the event id "Defer" and it was trying to build continuous session with spam filter...
View ArticleInternal Mail Flow Does not work. Email gets stuck in Drafts
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...
View ArticleSMTP AUTH: Does Exchange offer MTA-level authentication as well as user-level...
We have an MTA that needs to relay inbound mail to an Exchange server. I found that when the MAIL FROM address matches the username in the AUTH credentials, Exchange accepts the email. However, when...
View ArticleRestrict mail flow to DAG members in production site only
ScenarioI have 4 Exchange 2013 mailbox servers in Production Site and 2 Exchange 2013 mailbox servers in DR Site all part of a single DAG.In Active Directory however there is only one single...
View ArticleAfter Providing send as permission for distribution groups which are migrated...
Dears We have migrated our current Exchange 2013 CU11 from "x.com" to "y.com" .After the Migration which is again exchange 2013 , when we are providing send as permission to any distribution group for...
View ArticleUnable to send emails from Relay Connector
Hello Team,We deployed an new Exchange 2013 server CU8 , On the CAS Server Created an receive connector for Relay and enabled anonymous only and also added the AD permission for the receive connector...
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