Email Protocols

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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.

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I'm looking for an expert to help me understand DMARC reports.  I believe I understand the concepts of DMARC, DKIM, etc. and have set everything up properly.  I'm receiving the DMARC reports and have also setup a free DMARCIAN account.  I've been review the data in there and between that interface and looking at the XML reports in Excel, I'm just not putting it all together.  Ideally, I'm looking to hire an expert that can get on the phone with me to help me understand these reports and answer some questions I have.  I have a very good understanding of email, DNS, etc. but just can't figure out these reports.  Someone that understands DMARCs very well would be a great fit for this.

thank you!
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Dear Experts, I could not delete the message in Exchange 2016 like before.

Here is the screenshot, yellow square is the user mailbox, blue square is the distribution mailbox. So what are the differences between DROP and SEND in Agent tab?

e1.JPG
The second screenshot was the result after issued command to delete, it said success but the message was still in the recipient's mailbox

e2.JPG
Can you please suggest? Many thanks!
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Last week I opened my Outlook email (pop3) and noted that I had around 1700 unread messages, I thought, oh boy they found me expecting to find a ton of spam, but no.

While much of it was spam, a great deal was email I wanted to get, and it all arrived that day but was sent as long as 6 months before.   This was from sites like zip-recruiter, dominos, Dell, and multiple other domains.

I have been receiving mail from all of those sites, these were messages that simply sat somewhere in limbo?  

I changed my email password.  But I have no clue as to why this happened, or if it is going to happen to others, where do I look for answers?  The server logs only indicate that they all arrived the day they did. It seems like they were being "held" somewhere.

technical notes:  I do have my account on my phone (IMAP - turned that off), using ALT-N Mail Daemon (not exchange), NO one else (132 users) has reported this issue or anything even similar.
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I am running an Exchange 2013 server and have a 3rd party app that needs authenticate to use SMTP. If I encrypt authentication using STARTTLS it works. If I use TLS it won't authenticate. The certificate is assigned properly and the receive connector seems to be configured correctly as well. We're going through port 587 and I have no logs from the application. Just a message saying it couldn't authenticate.
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The user received a legitimate email with a return address using their text mail address. However they didn't send the email, they only received it.  The sending address is their phone number @ mms.att.net
The user has an iPhone, an iPad and an iMac.  The email was received on the iPhone and iPad, but not on the iMac.  

Is there a way to see the header on an email received on an iPhone or iPad?

They have since called AT&T and made sure that they don't share their phone number account with anybody else.
ATT told them that they also share a satellite TV account with another person, but that this other person is the only control for the shared account.

The user changed their iCloud password, and confirmed that they have 2-factor authentication turned on.

My guess is that their phone number is embedded in the Mac Messages app on some computer somewhere, and that when a file was 'shared' the Messages app sent the file using a wrong phone number.

Naturally, they don't want people sending out email using their AT&T phone number

Any idea how this return address appeared?

Thanks.


email with text mail address
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I would like what is the normal behaviour when you send an email from MS outlook 365 to Onenote? Is the email supposed to remain in outlook after it is saved in Onenote OR is it supposed to be deleted from Outlook?
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Got a user with a me.com account, trying to set up on Outlook 2010 with no success.
I've seen slightly different settings out there, but again, none are working.
Is Outlook 2010 even compatible with a me.com account?
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Hi,
On hMailserver, I have
36g.png36h.png
but  now it is leading to problem below
36f.png
when sending out mail (within server). Before this, it was fine to send out mail on server
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HI
Is it possible to investigate who a certain e-mail address belongs to?  My client is receiving emails from people trying to impersonate their employees by sending emails from addresses that are very similar to those used in the company
1
The user has just set up a gmail account, and is looking for software to pick up their incoming AOL email, and then automatically redirect the mail to their gmail account.

They have a computer that is always on and always connected to the Internet.  It would be great if this software could run as a Windows service or Mac OS X daemon.


Thanks
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I've got a user with their personal email (through Comcast) set up on;
Home computer
iPhone
iPad
Work computer
Laptop
Email is currently POP3 & the fact that mail isn't synched between all devices has started to bug him. I suggested changing to IMAP, but don't want any hiccups along the way, as that will have him freaking out!
What's the cleanest way to make this transition?
Any particular order to do the devices in?
Should I export his pst (for safe keeping or any other reason) before embarking on this journey?
Any advice appreciated!
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Email sent to a Yahoo user are received showing HTML formatting.
Is there a way to determine the cause?

Possible clues:
a CC: to an AOL user
An attachment

Here is a sample of what the message looks like, followed by the raw message:  
(Thanks)


<br>
<blockquote type="cite">
On October 19, 2018 at 12:13 PM Office Person <mxxxxxxxxxx@yahoo.com mailto:mxxxxxxxxxx@yahoo.com > wrote:
<br>
<br>
<div class="">
Dear Debbie,
</div>
<div class="">
<br class="">
</div>
<div class="">
Please find attached the initial Listing of Subject Matters, signed by Mxxxxx.
</div>
<


Raw Message below:

X-Apparently-To: mxxxxxxxxxx@yahoo.com; Fri, 19 Oct 2018 16:17:12 +0000
Return-Path: <info@dxxxxxxxxxxxxxxxxxn.com>
Received-SPF: none (domain of dxxxxxxxxxxxxxxxxxn.com does not designate permitted sender hosts)
X-YMailISG: qKG.UH8WLDs.FOsB1cMyFkzusazDRBj4HKCjOMdAX4qI0S7C
 DY8g.6LrdFltqjnqbSIHK5DJieJAm1MMp4hByEqI7mBZLFjod0BpERqUekPO
 ZQCQOXBiqa07zP1R7yD.9pKqIGINzHvaUzbqikOagkO9.ENL2_B7uoySjxfc
 6ZEzdk7GQcML.Jc3_fzUXBl6Ah5PcqzR1F81UYr11Uu0RxzhnLv0QDwD1EA_
 JvvYw.KkxMXDSg_KAtVrP1ytrC.sFF7.u3rLBO8XFZ8eR6761rNDZSBJzmx.
 6jxv3GfES7dd0Riz3RrSyLTO9hWGzrjtZuiH6Rv7qmG9NXtMcTaVSar2CJrU
 YJUZp2JBn491_DKLdvUW5_qEAxmGjxeB75sf_Xmn3_IRbfpf19Yjb_AOnkDE
 LLnDwwFNQxQikfDUGQ6GYG_fN5BZbUnbrFumz9YrO1chVPJfMfPXw_EdD7Tb
 xDXP3xrYcU3xkSdVIs3wQXZOn8tV.rwBt7QuxTfs95p.3CMz213Sa.lNmDhv
 9QkbZFU860Z6W8le7FfH1A7a5voXBk0qb_p4m33pibtAyX3VhIFuBWr3bsFW
 …
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Hello Experts,

My client runs an on premise Exchange 2016 organization with several MBX servers in a DAG. The issue is that a single user did not get the typical email message when she connected a new phone and tried to use the app Outlook for IOs and Android. For security reasons, company does not allow to sync devices with this app, and a mobile device policy was setup to prevent sync and an email automatically goes to user's mailbox.

Situation is that we can see the new device is in quarantine as expected, but user never got the email "Your device is temporarily blocked from synchronizing using Exchange ActiveSync until your administrator grants it access"

We performed an email search against this mailbox for the dates that she was supposed to receive the email, and the search did not return any values.

Other users are not experiencing this issue.

Any ideas?

Found the 2 links but they do not state how to resolve this issue or find a logical explanation

https://docs.microsoft.com/en-us/exchange/managing-devices-for-outlook-for-ios-and-android-for-exchange-server-exchange-2013-help
https://docs.microsoft.com/en-us/previous-versions/office/exchange-server-2010/ff959225(v=exchg.141)#controlling
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https://hostupon.com/web-hosting.php

starter unlimited plan

Is the email safe?

If I upgrade to
Business unlimited
Premium unlimited
is email more secure

can someone visit a webpage and see my email
using a browser or telnet or command prompt window
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Dear Experts

We have been provided to configure email account in CRM system to send email through the SMTP server using  office365 connector ( SMTP Relay ) the provided account is of without the password (hence in CRM system configured without SMTP authentication) , we were able to configure this account in CRM system and able to send mails but the messages are not getting stored in sent items. to achieve this should we have to go for Authenticate CRM application directly with an Office 365 mailbox, and send mail using SMTP client submission please suggest, thanks in advance.
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dear
I have critical situation , suddenly any user cant receive mails in my organization , i have exchange 2007 i can send mails but nithing reicved even internal
what i can do
i review all settings which was used before and it is up and running
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Something strange seems to be happening with my email.
1. I am not receiving some emails which I know were sent to me by certain people (because they confirmed so, and the email address was correct, they had sent to a group of persons, including me, but I only received a 'reply all' email from one of the other recipients
2. I sent an email to a friend on Tuesday night and he didnt receive it.  I checked and it was sent, in fact I received the cc copy.  He checked and it didnt go to spam etc.

My email system is:
- I have set-up Google G Suite to receive my emails and synchronise them with MS Outlook on my PC.  (The email arent showing in GMail or on MS Outlook)

Does anyone know what the problem might be, and/or what steps should be followed to identify the problem?
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hmailserver_log.txtI've been sending logs and reports from 3 sites at the rate of 20 per site per day.  It has always worked flawlessly - for years.
Suddenly, the emails don't get through from any of the 3 sites.
This happened for a few days about a year ago and then it fixed itself.  So, I didn't get any insight from that.

Here is the path:
Device or program sends an email. addressed to an outside address, via SMTP / local workstation LAN address where hmailserver is running (as a relay only).
hmailserver forwards the emails to fred@r........k.com at our external ISP mail system.
The ISP mail systems forwards the mail to the addressee at a domain / mail server that I "own".
The domain mail server delivers the mail to a POP account on one of my external workstations.
Like this
email to xyz@abc.com sent to server at [local IP addess]
hmailserver running at [local IP address] forwards mail via me@isp.com.
ISP send mail to xyz@abc.com
I get POP mailfor xyz@abc.com in my office.

I have attached a log from the hmailserver which you my well be able to interpret better than I.

In order to fix the disruption, it would be good to know where it's faiing…..
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Hello,
My client IPs has blacklisted only at Sorbs
Sorbs website – „Site Down for Maintainance“
http://www.sorbs.net
Im waiting for Sorbs website to find out reason and to delist IP but in the meantime what can I do to find source of the problem.
Any advice?
Maybe it is false positive?
http://forums.gfi.com/dnsblsorbsnet-has-alot-of-false-positives-m900742006.aspx
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I have a user using a web hosting company and their webmail to keep emails on the server and in separate folders.

We're moving him to a different hosting company. we want to move the emails / folders from that server to the new server.

I thought I was cute  - I connected outlook via imap to the old server, waited for it to stop saying sync'ing folders.
the exported as PST.

Changed the mail server  settings and pointed to the new mail server via imap.  Folders were empty and not many of them (in, sent, deleted, drafts).

Then I imported the PST into that account. Outlook shows all the folders, but they arent in the new webmail.

The folders / files in them show in outlook but not in the new server.

What's the right way to get emails on a pop / imap mail server into another server?
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I set a new IMAP configuration through Outlook 2013 for one of my clients. He originally had a POP3 setup.

My client stated he was wasting allot of time updating his desktop Outlook after he made changes (read, delete, send, etc.) on his iphone, hence the move to IMAP.  

The transition was not easy! He had massive custom folders (including sub folders) under his inbox containing client emails over the years. He is basically keeping a history via his outlook. I ran into a ton of problems attempting to restore a PST backup to an OST IMAP account - too long to explain. At a certain point I was moving one folder at a time/counting emails. I finally got to the finish line. All the folders/emails were synced to the online email server.  As I'm about to report the great news, my client tells me he opened a suspicious word document which turned out to contain a virus.

So...I had to buy new drives , and perform a full restore of  recent backed up images. I bring the system back on line, it performs an outlook sync and proceeds to freeze up the on-line email server web account (purchased through a 3rd party vendor). I am now unable to access any folders, or emails either through the web interface (to a 3rd party email server) or through Outlook. I called up the 3rd party, who stated they will refresh their server. I await the results.

In hind sight, I feel like I should have kept those custom folders out of the sync process. At this point, it feels like a total mess.

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Hello Experts - I have a question about making an MX record change.  We are using Barracuda's email filtering service and they are asking that our MX records be pointed to the following addresses:

Primary: d35456a.ess.barracudanetworks.com
Backup: d35456b.ess.barracudanetworks.com

Currently both MX1 and MX2 point to individual Barracuda IP addresses.  The records are hosted with Network Solutions.  When I sign in, I navigate to the Advanced DNS section to edit but the form requires a numerical IP address and won't allow me to enter the addresses above.  I feel like I'm missing something here, any ideas?
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Haven’t had to deal with this in a while but have a client we handle LAN tasks for. Their current web/ imap / pop mail host lowered mailbox limits to unusable numbers.

They don’t want to go to o365.

I’ve used hostgator reseller account for years but in thinking of moving them there I remember how we have wanted to get away from hostgator for so long. Their service / support works just enough to keep my inertia on moving at bay.

I know HG (and many other hosts) are part of a much larger holding company.

Is there any good hosting company you’d recommend? Or warn about?
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Dear Experts

We have configure CRM application system running on windows server R2, configure the application for outbound and inbound in the email settings section of application  but mails are not getting delivered from CRM system to SMTP server , log report attached, from the OS level when done telnet able to communicate to the mail server, can you please suggest where we might be going wrong and help us to fix this.
email-issue.txt
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I am setting up my organization's email (with Office 365 and an onsite Exchange 2016 server) in a hybrid environment.

Exchange 2016 has been successfully installed and activated on a Server 2016 Hyper-V virtual server.

Now what steps do I need to follow to integrate this onsite Exchange server with Office 365?
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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.