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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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
Why Diversity in Tech Matters
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Why Diversity in Tech Matters

Kesha Williams, certified professional and software developer, explores the imbalance of diversity in the world of technology -- especially when it comes to hiring women. She showcases ways she's making a difference through the Colors of STEM program.

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
How to decide to set dmarc to quarantine or reject? I am reviewing the dmarc reports but don't know what to set. Right now is set to none for collecting dmarc reports. What to do?
0
I have the attached php program that sends an email using PHPMailer().

I recognize that the preliminary code looks odd, but ignoring that, this code does precisely what it is supposed to EXCEPT when it is run AFTER 4:00 PM, Pacific Time USA, in which case, it does NOT send the email.

I recognize that GMT is 8 hours ahead of USA Pacific, so I am suspicious it has something to do with that.

That's why I put this in:

date_default_timezone_set('America/Los_Angeles');

Any ideas?
send_email_ls250.php
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How can I use CFIMAP to read email? I I am starting off with trying to open a connection and then close it. When I try to close it I get an error that there is no connection. My code looks like:
<cfimap 
server = "mail.server.com"
username = "myemail@mail.com"
action="open"
secure="yes"
password = "password"
connection = "conn"> 

<cfimap
action="close"
connection = "conn">

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but I get the error:
there is no connection available with name [conn]

I have confirmed that I am using the correct server, username and password. I am hoping someone can tell me what I am missing.
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As of late (past few weeks) I have users complaining that their Outlook session would not update with new message (that they would receive on OWA or their mobile ActiveSync devices - Exchange 2016 server).

Outlook (2016) is up and shows "up to date" as sync status. Restarting Outlook solves the problem.

Looking into the event logs I see a bunch of message such as:

Log Name:      System
Source:        Microsoft-Windows-Bits-Client
Date:          04.03.2019 12:05:43
Event ID:      16398
Task Category: None
Level:         Error
Keywords:      
User:          SYSTEM
Computer:      RD-SX-02.domain.local
Description:
A new BITS job could not be created. The current job count for the user domain\someuser (60) is equal to or greater than the job limit (60) specified through group policy.  To correct the problem, complete or cancel the BITS jobs that haven't made progress by looking at the error, and restart the BITS service. If this error recurs, contact your system administrator and increate the per-user and per-computer Group Policy job limits.

Open in new window


I would seem both are related but I am not sure to understand what is happening here. Tried to google it but I nothing obvious so far.

Any idea / pointer muhc appreciated.
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How do i find out if my linux server using sendmail or postfix to send email outside.

when i did send email out using the following command

mailx -s syslog-conf myemail < /etc/syslog/sylog.conf

I am getting "postdrop: warning: unable to look up public/pickup: No such file or directory

But i do see the file
0
Gmail not working with Outlook. I have set Gmail to use IMAP but it is still not loading email into Outlook. I have tried on a desktop and mobile. Anyone had luck?
0
Hello,

we are using Mobile Device Manager Plus MSP. Our goal is to get mobile devices that are secure with no unwanted app and no change of system settings. The devices have only company email access. The phones are company owned so no BYOD.
For us the Kiosk mode was a proper solution for this.

Now we have 2 problems with email.
Since Android 8 Gmail seams to be the default email-config-setup app. So if you push the active sync settings and MDM will setup the password it will always open Gmail.
How can we change this or is there a work around?

We don't want to use the Gmail App, because the accounts settings are "open". This means you can add other private mail accounts.
So the other question is, what are other (enterprise) Mail Apps than can be configured with only the company active sync server?

Maybe the Mail App will also solve the first question :)

Thank you.
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Is it Possible to restrict Views in Exchange Admin Center in a Multi Tennant Enviroment In Exchange 2019

I Have used RBAC To restict how the roles function However Administrator of Other Organisational Units can still see all other Tennants in Other Organisational Units

Even though they cannot edit it, We would like the Admin Of each Org Unit to only See Users of that Org Unit
2
Learn SQL Server Core 2016
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My emails sent from my gmail account are not delivered to prodigy.net.mx accounts

I send an email to *******@prodigy.net.mx (my accoint too)

And it is never received. An my gmail account gets no undelivered message.

All other gmail accounts I have tried send to prodigy.net.mx and are received fine.

Prodigy aupport says it is a gmail problem.

I am at a loss.. I ahve neve aabused my account in any way.

Is there a way to trace what happens one the emails are sent? To see where they are being stoppned from delivery?

Thx
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.
0
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, …
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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);
   

























  

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help appreciated
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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
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
I have a client using IMAP in Outlook. Yesterday she wasn't receiving any emails. I looked at the account settings, and they were all correct. I tested the connection, and the test message went through just fine. Then I closed the windows. After a second or two, her emails started coming in. This morning, she again was receiving no emails. I checked the settings again and again tested the connection, then closed the window. Again, after a moment or two she started receiving emails. She never has a problems receiving emails on her phone (also IMAP). It's like every day I have to remind Outlook it can find the server by testing the connection. This is very inconvenient. What can I do?
0
I'm configuring postifx mail server in centos 7. i have facing problem related rate limit outgoing mails. my requirement is 3 mail every 1m. so what type of configuration in main.cf and master.cf. i hope you will help me.

Thank you
0
Exploring SharePoint 2016
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Exploring SharePoint 2016

Explore SharePoint 2016, the web-based, collaborative platform that integrates with Microsoft Office to provide intranets, secure document management, and collaboration so you can develop your online and offline capabilities.

I have a website on an internal domain. It's hosted on IIS and uses some javascript scripts and SKEL for for content generation, resizing, it works well as a responsive web page.
There is a form to send email, it is centered around using an external email provider. I have set it up so that it puts the requested data, (type of info requested, name, email, etc) and puts that where it belongs in the users own default email client. (generally Outlook). We have our own SMTP server.
My question is what is the simplest approach to get email sent using the form? The server is Windows server 2016, IIS. I have looked up stuff and see PHP, ASP it's kind of crazy how complicated it gets. Maybe I have not found the right tutorial.
0
Hi,

I was trying to send emails through powershell on a computer PC01. and received error message blow
"InvalidOperation: (System.Net.Mail.SmtpClient:SmtpClient) [Send-MailMessage], SmtpException"

I also tried to run the same script on another computer PC02 in the same subnet. it worked.

Both PCs can telnet to the smtp server on 25 successfully.

I have also tried to use ISP smtp to send email which was the same result PC01 didn't work with the same error. PC02 worked.
I checked the even log, no outstanding errors or warnings found.
I have also tried to turned off firewall and antivirus program without luck (which shouldn't be the issue as I can telnet to port 25 on the smtp server)
0
We have a single user who is unable to send email outside of our organization due to multiple kickbacks with following NDR
Remote Server returned '550 5.7.501 Service unavailable. Banned Sender
I have verified by searching the various online spam lists ( spamhaus, etc) that our domain is not on any list and the issue does not seem to be effecting any of our other users. This user had his account hacked last week and we discovered it was used to send a large amount of spam before we reset his account.
I am unable to find a solution to resolve kickbacks for a single email address.
Help!
0
We have been struggling with setting up our website on a GoDaddy Virtual Private Server. Please Help!

We have a .net program that connects to First Data to process credit cards. It running on a Windows 2012R2 + Plesk Virtual Private Server hosted at GoDaddy.We need to send confirmation emails from the server after a transaction is processed. I am attempting to send an SMTP email on a GoDaddy Plesk VPS and am having difficulty with the syntax.  Here are examples of what has been tried with the corresponding error messages.

may-2-email-tests.txt
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email that I'm sending is now going to my customers spam boxes.  kinda happened out of the blue.  its not bulk emails.  its individual emails the i type with info for my clients.  i do copy/paste some info that goes into each email as well.

been working fine for years...its just all of the sudden everyone is saying that email is going to their junk boxes.  

its my own private domain email, i use gmail as the client for checking and sending it.

i havent changed anything on my end.  what do I need to look for to see what is going on?  TIA
0
as many others I have also problem #550 4.4.7 QUEUE.Expired; message expired ##
Exchange 2010 works fine for years, suddenly is refuse to send mails to some e-mail addresses.

I checked, MXtoolbox
reversed dns (PTR) is set
in exchange send connector FQDN is filled in and is the same as the PTR


please advice,

Many thanks Victor
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.