Problem relaying to one of our domain after changing public IP.
After changing our public IP we are having problem relaying to one of our domains. Our on-prem exchangeserver (used only for relay) get the following error in the message queue. "Last Error: 451...
View ArticleDMARC - Return-path
Hi we have problems with Out of office and DMARC, the return-path is empty so the out of office message going straight into the spam/junk folder of hotmail/gmail etc. I have googled for a solution to...
View ArticleEmail Jam in the Journaling Queue
We have random emails mostly, it looks like just spam that keep getting jammed up in the "Journaling Queue" with the following error;“Last Error: 400 4.4.7 The server responded with: 550 5.6.2...
View ArticleEmail suddenly difficult to send
Today, our users are reporting that messages are being held in the outbox and not being sent out, and some internal recipients are giving bounce-backs saying that the address is quarantined despite...
View ArticleMails being refused by Gmail due ti ipv6 in mailheader
Hi Gmail is rejecting mails because of ipv6 information in the mail header (exchange 2013). I have read some threads saying that I could do a reghack do disable ipv6. But I have also read that Exchange...
View ArticleMail from the application is not send to external domain.
Dear Team,We have configured HP software to monitor the network and generate the mail. The software is monitoring the same and generating the mail, but that mail is received only internal mail id not...
View ArticleInternal CAS Servers servicing clients despite being behind a Load Balancer
Hi Everyone,We have 10 CAS servers, with the OA and Autodiscover URL going via a load balancer, which redirects to the 10 CAS servers. We recently put in an additional two CAS servers, and set the...
View ArticleMail Relay stops working, have to reboot every 6 hours
We have a service that relays voicemail to email for several domains. After working fine for years, suddenly it stops working about every 6 hours (about every 10 hours during off hours). Rebooting...
View ArticleServer returned '400 4.4.7 Message delayed
"Externals email(Yahoo mail) are not going from my company email( Exchange Server 2016) but email is going to gmail and outlook live" please advice me.Below the Error Message Generating server:...
View ArticleOutlook 2010/2013 and Exchange 2016. Password prompt when computer is outside...
HiI've a problem with connection to Exchange 2016 when users are outsite. Inside company (LAN connection) when users run outlook 2010 or 2013, there is no problem with connection to server. When they...
View Articlemail flow delays
i have a few emails being delayed from an external sender (only that i know of but could be others).it hits my mail MTA at 9:02.immediately i see a return message in the MTA logs from my load balncer...
View ArticleSMTP relay to Exchange Online
Hello TechNet,We have 4 Exchange 2013 servers configured in hybrid mode with Exchange Online. All mailboxes have been migrated to the online service and the MX records points to Exchange Online.The...
View ArticleReconfiguring SPF record for more than 13 cloud email sending service provider?
I need some help in reconfiguring the SPF record issue in my currentdomain.com like below:v=spf1 include:mailgun.org include:sendgrid.net include:amazonses.com include:surveymonkey.com...
View ArticleChange From Address Into Original Sender On Gmail SMTP as Smart Host
Hi,Currently I'm setup my Send Connector to using smtp.gmail.com as Smart Host with a Google Account for Basic Authentication. The problem is the delivered message replace the original sender (my...
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"Spambox" Folder in Outlook
I've got a user that has been having a weird issue for months that I just found out about but also can't figure out. Please note even though we're currently in a Hybrid configuration this issue existed...
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Question on connecting a SMTP server to Exchange 2013
I have a 3ed party software that has a built in SMTP server that coworkers want to use.However, there is no where to input credentials to access a mailbox within that server.Therefore, User A can use...
View ArticleSending Mail to External INTRANET Domain
I have an on-premise setup consisting of two 2013 Exchange Servers in a clustered DAG.Recently a sister organization has requested to be able to send mail to us from their mail server, and also have...
View ArticleExchange 2013 junk e-mail filter with safe senders list bug?
Hi, We've got unwanted experience with Exchange 2013 mailbox junk e-mail configuration. We've setup an account junk filter settings, that accept e-mails only from senders from safe senders list, with...
View ArticleCannot send outbound email
I set up a new environment with Exchanger server 2013. I have pass Microsoft Remote Connectivity Analyzer Inbound and Outbound SMTP tests. I can normally receive inbound email. But I cannot...
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Blank Delivery Report using exchange admin center
when running a delivery report on a mailbox the result com back blank. The mailbox gets tons of mail each day from internal and external. if i run the report via powershell i can see the...
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