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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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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.
0
Amazon Web Services
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Amazon Web Services

Are you thinking about creating an Amazon Web Services account for your business? Not sure where to start? In this course you’ll get an overview of the history of AWS and take a tour of their user interface.

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
0
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?
0
We currently use EWS to move emails from the inbox of one mailbox to the inbox on another mailbox based on specified criteria. The code is as follows:

private void MoveEmailToAttacherMailbox(string id, string attacherMailbox)
    {
      DocStore.Logger.Info(string.Format("{0} id: {1} To attacherMailbox: {2}", (object) nameof (MoveEmailToAttacherMailbox), (object) id, (object) attacherMailbox));
      try
      {
        Item.Bind(this.exchangeService, (ItemId) id).Move(new FolderId(WellKnownFolderName.Inbox, (Mailbox) attacherMailbox));
      }
      catch (Exception ex)
      {
        ProjectData.SetProjectError(ex);
        Exception exception = ex;
        DocStore.Logger.WarnException(nameof (MoveEmailToAttacherMailbox), exception);
        ProjectData.ClearProjectError();
      }

Unfortunately since 29th November we have been getting an error: "MoveEmailToAttacherMailbox Microsoft.Exchange.WebServices.Data.ServiceResponseException: The move or copy operation failed."

No permissions have changed and the mailbox we are moving from has full delegate permissions to the mailbox we are moving to. Any assistance will be greatly appreciated.
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In a Nation Builder nation, I have a 700-member e-mail recipient list. The majority of these recipients were imported when my nation was set up a couple of months ago. Email to these recipients is solicited because they all pay a monthly/annual fee for membership.

I've sent about a dozen email blast in this time without problem, and I get stats on how many people opened links inside the emails, how many bounces, how many are ad addresses. However a couple of weeks ago, I sent one out and it first reported everything to be OK, with zero bounced, but after about 4 days, the bounced shot up to 117. This was highly irregular because the highest number of bounces before this was about 8. I had a look at the 117 and they are all Yahoo, AOL or Sky addresses, and since AOL and Sky go through Yahoo, we can assume that this is specifically a Yahoo problem. Here's the message that appears in Nation Builder next to each bounce...

4.0.0 Email was deferred due to the following reason(s): [IPs were throttled by recipient server]

I've done two more blasts since this, and the same thing happens. I've checked with a few owners of these email addresses and can confirm that the emails are not being received.

Is there anything I can do to help this situation, either on Nation Builder, on Google G-Suite, or on Yahoo? I've contacted Nation Builder support, but all they suggested was that I send a handful of emails at a time in order to rewarm Yahoo. But this could take a long time, …
0
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?
0
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
0
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
0
Exploring ASP.NET Core: Fundamentals
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Exploring ASP.NET Core: Fundamentals

Learn to build web apps and services, IoT apps, and mobile backends by covering the fundamentals of ASP.NET Core and  exploring the core foundations for app libraries.

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!
0
I have a PGP Universal Email Gateway that is used to encrypt and decrypt emails.
The workflow is as followed.
  1. Email is sent from my email server and there is a send connector rule to route a handful of domains to our PGP UGS to be encrypted then off to the archiver service
  2. Inbound emails are routed to  the PGP UGS from the Archiver service and if the email is encrypted it will be decrypted and sent to the email server to be processed.  

I did a Key Exchange with a client and this was one of the most difficult ones I have dealt with so far.  They have two options. PGP or TLS mandatory.
TLS option was rejected due to my spam/email protection (SaaS) is the  first hop after my email server.  Being that this is a third party that the email is being processed the client rejected this method so I had to go down the PGP route.  

I have a PGP UGS in my environment already and it has been working great for the most part.  This new client requirements are stricter than prior clients that I used this method with. They  mandate that the email be encrypted with a MDC (CHECKSUM), even though the initial tested passed and were acknowledge as a valid means to transmission.

I am not sure exactly what part of the PGP MDC is. I am encrypting to the client's key and do not know how to apply MDC to the emails.  Any insight, suggestions or alternative options is what I am looking for.  They gave me 4 weeks to resolve this.
0
well  how can I decode the emails  so i can get plain text?

import poplib;

import io;

import string;

import encodings;

try:

 server = poplib.POP3_SSL("pop.gmail.com",poplib.POP3_SSL_PORT);

   

except:

 print("Error");



response = server.user('XXXXXXXX@gmail.com');

response1 =  server.pass_('XXXXXXXX');

print(response);

print(response1);



# download the first message in the list


messages = server.list();

print(messages);
   

























  

Open in new window


help appreciated
0
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
 …
0
Hi - I have an IMAP email account that was setup correctly, and all email was downloaded into Outlook as it normally does. I'm having a strange issue where I don't see any email from today or yesterday, the latest date that shows on top (sorted by newest) is Monday. The strange part about it is, that if I do a search in Outlook for something, it does show email from yesterday, but only when I search. I've checked the IMAP folder settings to make sure that "hide messages" is not set, and it isnt. I've also checked to make sure that the "TODAY" email group is not collapsed and out of view. I'm not sure where to go with this. Any ideas would be greatly appreciated!
0
On a Canon IR-ADV 5235, when Scanning to Email, if the files are beyond a specific file size it will split the emails in two, with the attachments.
I would like to specific the maximum scan/file size that it can send, so that it doesn't split the file in 2.
0
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
0
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
0
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.
0
HTML5 and CSS3 Fundamentals
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HTML5 and CSS3 Fundamentals

Build a website from the ground up by first learning the fundamentals of HTML5 and CSS3, the two popular programming languages used to present content online. HTML deals with fonts, colors, graphics, and hyperlinks, while CSS describes how HTML elements are to be displayed.

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
0
Dear Experts, we have several Exchange 2016 servers (VMs) in Vsphere 6.5 environment, but one SAN storage is running out of space.

How can I check whether if we can delete some space in Exchange Database? Due to company policy, we have to keep disabled mailuser for a year; but in urgent they can be deleted.

But I'm not sure to check the space which was taken by those disabled accounts. Can  you please help? many thanks!
0
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?
0
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…..
0
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
0
My brother-in-law has forwarded an email conversation to me that was initiated by a request for the payment of an invoice that did not exist. The spam email appears to have come from his email address and was sent to people in his address book. I was wondering if someone could help me to recognise whether the spam email is a spoof or whether someone or something has managed to hack into the email account. I have no real experience of reading email headers so please be gentle.
Thank you in advance.
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.