Email Protocols

14K

Solutions

17K

Contributors

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.

Share tech news, updates, or what's on your mind.

Sign up to Post

Hi Experts,

I have a some problem to understand some things on Exchange 2016.

First of all, I want to explain how works my exchange :

  1. DAG - 3 members
  2. 1 Edge on the DMZ : 10.0.0.1
  3. 1 Fortigate to do the link between the Public IP and the EDGE on the DMZ : Client -> Public IP  -> EDGE Server
  4. Here the smtp : exchange.contoso.com
  5. I have an external Client who send mail through our Exchange : 50.50.50.50.

Then, I have a receive connector on the Edge :
AuthMechanism                             : Tls, ExchangeServer
Banner                                    :
BinaryMimeEnabled                         : True
Bindings                                  : {10.0.0.1:25}
ChunkingEnabled                           : True
DefaultDomain                             :
DeliveryStatusNotificationEnabled         : True
EightBitMimeEnabled                       : True
SmtpUtf8Enabled                           : True
BareLinefeedRejectionEnabled              : False
DomainSecureEnabled                       : False
EnhancedStatusCodesEnabled                : True
LongAddressesEnabled                      : False
OrarEnabled                               : False
SuppressXAnonymousTls                     : False
ProxyEnabled                              : False
AdvertiseClientSettings                   : False
Fqdn                                      : SRV-DAG-EDGE.contoso.local
ServiceDiscoveryFqdn    

Open in new window

0
Learn SQL Server Core 2016
LVL 13
Learn SQL Server Core 2016

This course will introduce you to SQL Server Core 2016, as well as teach you about SSMS, data tools, installation, server configuration, using Management Studio, and writing and executing queries.

How can I send a text from my computer to a mobile phone number if I do not know the name of the carrier?
0
I have an existing Outlook 2013 setup with one POP3 email configuration. I purchased a new POP3 email account that I wanted to add to the existing Outlook Profile, set as default, and remove the  original. I believe I made a mistake deleting the original POP 3 account  from my registra before removing it cleanly from Outlook.  So, when I went to open the account settings within Outlook, it won't open. I am unable to access the account to delete it from the OUtlook Profile. Luckily I was able to switch the default to the new POP 3 account so Outlook does open, yet I believe I will have problems with  the  calendar, tasks, etc. I already know I am  unable to reply from the new account.

How can I get rid of the original email account, and have all the Outlook functions (Calendar, Tasks, Contacts, etc.  associate to the new user?
0
0
Hi Experts,
I am looking for a program that will keep checking at a particular folder every 20 minutes, if there were no new files created then will send an email.
This should be running all the time except for night hours (10.15 PM to 6.00 AM).
Thanks
0
We have an Online Exchange (O365). We have multiple affected users with the same issue and is persistent across all versions of Outlook.

The users have full delegate access to a Shared Mailbox. They are able to view and access the mailbox just fine in Outlook, but the Shared Mailboxes also have In-Place Archiving enabled. These show up in the delegates users' Outlook as Online Archive - Example@Example.com . But when attempting to access the Online Archive via Outlook, they are getting the error message:

"The set of folders cannot be opened. The file C:\Users\user\AppData\Local\Microsoft\Outlook\User@Example.com - Example.ost is in use and cannot be accessed. Close any application that is using this file, and then try again. You might need to restart the computer.

We have confirmed that the users are able to connect to the Shared Mailbox via OWA and access the archives there, this issue is solely isolated to Outlook.

We have tried purging the AutoDiscover keys in the registry, creating a new email profile in Outlook, and deleting the OST files and Outlook cache to no avail.
0
We have an org with both 2010 and 2016 exchange all on premises.  The 2016 servers are in Europe and we originally had them using "xxx@company.eu" as UPN and primary SMTP.

The business has asked us to change everyone to a "XXX@Company.COM"  UPN and Primary SMTP.

We have users in the .eu that have been using in-place archives with no issue.  Once their UPN and Primary SMTP has changed they now cannot access the in-place archive.

They (the .eu users) are on a separate network (acquired company in process of getting onto our network) and use Outlook Anywhere.

There is a mix of Outlook Office Pro 2010 and 2016.  
We have recreated profiles and still not working,

The 2010 Outlook clients can see the archive but it says it cannot connect if clicked on.
The 2016 Outlook clients - the archive never shows up.

All of then can get to the archive via OWA with no issues, and I can add a profile from on our network with no issues and see the archive no problem.

Is this an autodiscover issue ??  What am I missing?

Thanks in advance!
0
I have users with a primary email domain as @domain1.com.  They also have aliases of @domains2.com and @domains3.com.  What I need to happen is that I want the user to be able to change the "From:" email from their primary at any time incase they have to show as a different email address for legal purposes.  

I attempted this with outlook and entered in one of my aliases on the from line but the recipient still shows as my primary and not the address in the "From:" I manually entered.  Any help would be greatly appreciated
0
Can someone who understands DMARC explain to me exactly what is happening in this DMARC?

spf=neutral (google.com: 209.222.82.54 is neither permitted nor denied by best guess record for domain of 15200-bounces@bounces.ess.barracudanetworks.com) smtp.mailfrom=15200-bounces@bounces.ess.barracudanetworks.com;
dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mysupercompany.com
Return-Path: <15200-bounces@bounces.ess.barracudanetworks.com>
Received: from 22pmail.ess.barracuda.com (22pmail.ess.barracuda.com. [209.222.82.54])

is 209.222.82.54 not authorized/allowed to 15200-bounces@bounces.ess.barracudanetworks.com or is 15200-bounces@bounces.ess.barracudanetworks.com not authorized/allowed to 209.222.82.54.
0
We are setting up SPF, DKIM, and DMARC for our domains but just wanted to get some clarification on the best options to set for each scan result:
none, neutral, softfail, hardfail, permerror, temperror

So basically wanting to know which is the best option?
From reading it seems that HardFail would be the way to go but just wanted some insight for these settings and what is the best practice for them to set them up?
0
Introduction to Web Design
LVL 13
Introduction to Web Design

Develop a strong foundation and understanding of web design by learning HTML, CSS, and additional tools to help you develop your own website.

Hello, I have a specific setup where an application can only send mail through port 25 but it needs to run at customer premises where the internet access filters outgoing port 25 which is not too uncommon. To solve this I have utilized a very simple mail proxy (URL below) that runs as a local SMTP server on port 25 and then forwards it to an external SMTP server using alternate ports.

This proxy setup works fine for mail only, but now I have the added user requirement that the mail also should handle attachments and the proxy below does not seem to do that.

Are there any very simple mailproxys available like the one below that also can handle mail with attachments? Thanks in advance


https://help.mailstore.com/en/server/MailStore_Proxy
0
Finder and deleting old Mac Thunderbird emails

I have deleted a handful of old email accounts in Thunderbird. But, I forgot to always check the checkbox to remove the associated emails.

Now, I am asked to compress the emails, which are ~275 GB.

Is there a way to find these folders and delete them manually?

Thanks
0
Hi,
I have to design a little email tool for sending semi-automated mails to customers on behalf of employees who don't have enough time to do by theirselves. Information about mail targets (customers) are taken from a database, a mail template is used and filled with the appropriate information. At least that mail is sent out to the customer and a bcc is sent to an internal 'archive' mail address. My tool's basically working and sending mails out. But here are the requirements (and my related problems):

1. If target mail address is not correct or something goes wrong within the mail transport, the error mail must not go back to the employee (which name and address is used in the from tag). Error mails should go to a different 'pool' address, where an operator may compare and correct against the database.

2. If customer replies to the mail, that reply should go to the employee rather than to a 'pool' address or operator.

3. The mail should optically appear to the customer as if it has been sent from the employee.

I need an example on how to create the mail headers to accomplish exactly that behaviour (or one close to that). I tried some combinations and I read the RFCs, but I couldn't get the required results so far.

Any help is greatly appreciated.

TIA
Michael
0
Our organization maintains email addresses through Google G Suite.
  • In the past we offered private email to people associated with our organization (like: name@ourplace.org.)
  • We now want to restrict organization email to business accounts.
  • I would like to have personal accounts disabled, but with a forward that will send on personal email to a other providers for a period of time.

Anyone know how to do this?
0
My client uses gsuite and a CRM program to send mail. I have configured the gsuite properly for SPF, DKIM and DMARC. But DMARC is showing me that the client is also using SENDGRID.NET to send mail. After investigation, we found that the CRM is created by a third party, and ALL the mail goes through their SENDGRID account, leaving no way to to individually configure it.

I created an SPF record for this, but I would like to create a DKIM record. There is a DKIM-Signature in the header of the email from sendgrid. Is there a proper way to create a TXT record to store this information? Would I need to add this to the current TXT record used by gsuite or would I make a new one?

Thank you.
0
The user has a brand-new email account, and wants to control what senders they receive email from.
They have an Exchange account with Intermedia, a large hosting company.

I recall there being a company that had a system which receives and holds the email, notifies the user, and waits for the user to approve senders.

Can anyone tell me what companies offer this service?
0
I have a Group setup in Google Groups. I am using an SMTP relay in Amazon AWS to send emails to people utilizing the email address associated with that group. I did a test, sending to a fake email address, to see where the bounce notifications go. No bounce notification is being sent to the Google Group as near as I can tell. Does this mean it is being sent back to the original SMTP relay server instead? Or, is it going to the group, but Google Groups does not display bounces? If it is the later, is there a way to get delivery failure notifications to show up as topics in the group?
0
Hello fellow Experts Exchange members:

I have one client still running Exchange 2007 as part of Small Business Server 2008.

(We are in the process of getting this old server replaced.)

The client is unable to receive e-mails from one mail domain due to their requirement to use TLS 1.2 which Exchange 2007 does not support.

For the time being, does anyone know of a workaround for this?

For example, I have the public IP address of the mail server for the problem domain.

Would I be able to create a temporary workaround by creating a new receive connector with modified Authentication and Permission Groups settings just for the IP address of the mail server for the problem domain?

Sincerely,

Kahn
0
Hi
I have an PDF attachment on my official email and when open it from the official email it opens the PDF attachment without any problems. But if I forward to my personal email and, the attached document format changes to Winmail.dat.
Please can you know why this is happening and how to resolve.
Thanks is advance.
0
Rowby Goren Makes an Impact on Screen and Online
LVL 13
Rowby Goren Makes an Impact on Screen and Online

Learn about longtime user Rowby Goren and his great contributions to the site. We explore his method for posing questions that are likely to yield a solution, and take a look at how his career transformed from a Hollywood writer to a website entrepreneur.

We have to be PCI compliant and on the PCI comliance report, I have an issue with port 465 and my exchange cert.  Not sure why it's throwing an error, but
it's complaining about a self signed cert.  I'm running exchange 2016, and in my certs section, there are 4 certs, one is invalid, expired.

The multiple names certificate is my good, or real, valid cert, from Godaddy. The report is complaining about either the  wmsvc-sha2 cert or the other,
my question is, can I delete every cert here except my multiple name certificate?   Will that cause any issues to mailflow, or OWA?

Not sure how to resolve this issue?  Any thoughts?

elisha is the name of my exchange server.

Exchange certs
cert

PCI error
PCI error
0
I have Office 365, and am trying to POP my gmail account. When I tried to set up gmail as a pop account(outlook is 32-bit version) under the default OUTLOOK profile, I would receive the test email in my gmail acct, but get an error message "unable to connect to server".

I then setup gmail as a separate profile, and got error messages unable to send test email and unable to connect to server.

Why is it so hard to do this? I enabled pop in gmail settings, along with imap. I disabled 2 factor identification and enable 3rd party app access. Bu t I am tearing my hair out with this. Please see image of error message attached.
0
When I send an email to another email address the name the recipient sees is NOT my name (Edward H.....) but a made-up name ‘Skype123a’. How do I correct this?
Am using IPhone 7 but this happens on all devices
My account is a gmail account.
0
I am looking for software that will do the following.

Open and examine an Outlook email, and summarize the IP Address of the sender,
and any other interesting information about where the email is from, such as country etc..
and perhaps any other important information in the header.
0
Hi,

What ports are used for Outlook or tablet to connect to O365 server (MAPI)?

Thanks
0
My workplace is getting bombarded with malware every day via email. It's mostly fake invoice stuff but comes in many forms. We are flooded with the stuff. It's going to every account we have, etc. We have Barracuda in place, and stuff slips through it, plus we have Sophos on each PC to help catch anything that gets opened.

Many people will forward suspicious emails to IT just to let us know what is going on, and I wonder if this is hurting more than helping. Once it slips through, if it keeps getting passed around via forwards, is this helping to legitimize the email as far as scanners go? Should we tell people to stop forwarding us suspicious emails?
0

Email Protocols

14K

Solutions

17K

Contributors

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.