Stop Outbound Phishing
Hi everyone,we detected phishing spam mails are being sent at high rate from our single Exchange ServerMessages are sent by: "******@*******citibank.com", with this subject: "Your Credit Card Has Been...
View ArticleCan't receive email from certain domains with Exchange 2010
Hello,I have recently ran into a problem with my Exchange 2010 server. I can not receive emails from certain domains. There is only 2 domain names in particular (only one user from each domain has...
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 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 ArticleDelivery Report missed some messages
Good afternoon, all!I've just run into a situation on my Exchange server farm where a message we know was delivered does not show up in a delivery report. The message came in a couple of weeks ago and...
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 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 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 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 deletes message with attachment which has long names
hi recently my exchange 2013 has started to delete messages with attachment which has long names. i change the same attachment to short name , the email goes through. this happens to inbound mails...
View ArticleAudit eDiscovery searches?
Is it possible to log all the times eDiscovery has been used? I'd like to have an audit trail of searches that were performed. Is that possible?
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 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...
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Email from Office365 can't reach On premise mailboxes in Hybrid Exchange 2010
Dear Exchange Expert,Currently we are implementing the Office 365 Hybrid in our environment which is running Exchange 2010. We have finished the HWC and we are now migrating the first pilot test...
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 ArticleUsing disclaimer rules as signatures
I'll start by prefacing that I have little to no HTML or CSS experience.I've begun experimenting with using the disclaimer feature in Exchange 2013 to add personalized signatures to users' messages....
View ArticleExchange 2013 Transport Rule Question
Hi all,Apologies if this has been answered elsewhere, if so please redirect me to that post. My question is this: In Exchange Online when you create a new Transport Rule and use the advanced options,...
View ArticlePremium Journaling rules and target addresses
Hello,IN Exchange 2013 do messages sent to a user with a targetaddress attribute applied get journaled before the message is routed to the targetaddress destination?Thanks
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 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...
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