451 4.4.0 SMTPSEND.suspicious.RemoteServerError
Not sure if this is the correct forum, but our customer is using EOP and we are getting this error when we try to send emails from EOP into the new Exchange 2013 environment. It works when sending to...
View ArticleMessage bouncing back.
Hey, everybody:I'm concerned that the message header that ForeFront is adding is causing e-mails to be bounced by several of our customers. It's bouncing 554 Not authorized. We actually rerouted the...
View ArticleA few domains are blocking our O365 e-mails. Here's the transcript
A problem occurred while delivering this message to this email address. Try sending this message again. If the problem continues, please contact your helpdesk.Requested gave this error: Delivery not...
View ArticleDelivery has failed to these recipients or groups
Team,I am getting Remote Server returned '532 5.3.2 STOREDRV.Deliver; Missing or bad StoreDriver MDB properties' bounce back message while sending mail to bulk user id. Please help for fix up the...
View ArticleExck2k13 'protected' by E.O.P - There is someone using to share experience?
Hi,we are using Exchange Online Protection to avoid spam and phishing but no great results regarding Brazilian spam. Can someone share some tips/ideas regarding the configuration?I created a new post...
View ArticleExchange 2013 CAS-MBX recipient validation rejects entire message if any of...
Hi,How can I enable recipient validation work in this design: 2 Exchange 2013 servers with CAS and MAILBOX roles both, DAG and Hardware Load balancer for HTTP and SMTP traffic.From Exchange...
View ArticleProblems when forwarding NDR's the get translated to Chinese garble (if it is...
Hi ThereWe're running on an Exchange 2013 server. When users get a NDR (look OK at this time), but when forwarding the NDR to system admin, they get garbled into Chinese (or what looks like Chinese)....
View ArticleLocal domain redirection trough a smarthost
Hi,I'm currently in a migration and I would setup my Old (Mdaemon server) in coexistence with my new exchange 2013 server.My mdaemon send email that have been migrated (Unknown Mail) to the...
View ArticleExchange 2013 - Fresh installation--Why all of this spam all of a sudden?
We are coming from an Exchange 2003 with SBS2003 environment so have no experience with versions other than that prior to using Exchange 2013. We have a new Exchange 2013 installation using the same...
View ArticleInbound mail timeout
HiI please need some advise...I have a hosted Exchange 2010 installation with quite a few tenants.Here in South Africa there is a company that sends payslips through an accounting suite, and there are...
View ArticleWhat is the port used between smtp server and MX server?
Hi,What is the port used to connect from smtp server to MX server of recipient server?I think it's port 25 but this what I'm confused.Send email using smtp server to recipient: worksTelnet on port 25...
View ArticleSMTP test to Exchange 2013 failing
I have an Exchange 2013 server set up for testing which I am trying to have the internal servers relay off of to EarthLink (My ISP).The Receive Connector is set up as a FrontEnd Transport, Anonymous...
View ArticleCross Site DAG causing Mail Loops
I am trying to set up a cross site DAG to add site resilience to our Exchange 2013 system (all build 995.29). I have 2 servers at the primary site (Exchange 1 and 2) both running CAS and DAG roles....
View ArticleBlocking HTTP access
We have an Exchange 2013 environment and I'm trying to ensure that all users connecting to OWA are forced to use HTTPS. I have configured the URL redirect and modified the "Require SSL" option on the...
View ArticleExchange 2007 -> 2013 switch mailflow
Hello,Currently we are in a coexistence scenario. We have installed:EXchange 2007 => 2 CAS/HUB servers, 2 MBX servers and 1 EDGE serverExchange 2013 => 2 MBX servers, 2 CAS servers (load balanced...
View ArticleCannot send to exchange mail server
Hi there,The mails are rejected by exchange server as the contents of the emails he sent were blocked. It is due to "VIRUS Attachment Block" to which it contains'F44907162.zip'. But the mail server is...
View ArticleExchange server 2013 - updating to SP1 then CU5 result to mail flow issue
Hi, I'm facing a huge issue with our exchange server since we applied SP1, mail flow is now stopped and our front side server (postfix with spam assassin) get error : 451 4.7.0 Temporary server error....
View ArticleMail flow question
I have a stupid question, since there is no more hub transport role in Exchange 2013 I'm trying to figure out which role sends and receives email. I am going to put the CAS Role on one server and the...
View Articleactive directory change question regarding affects on exchange 2013
Good day, I have some universal security groups that are meant to be distribution groups in a 2008 R2 active directory forest. These groups are being utilized by exchange 2013, I plan on turning...
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