Simple Mail Transfer Protocol is the protocol used for sending email.

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How To Obtain the Smtp Server?

I've gone through this set up for an Azure server VM and when I create a file with the below format and drop it into C:\inetpub\mailroot\Pickup\ it sends without issue. TO: to@email.com FROM from@...
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26 views

What are the current server-side anti-spam practices? [closed]

I have had an email server for a long time, and spam hasn't been a problem until recently. My server runs Postfix 2.11.3-1 (from Debian), and I use several DNS blocklists (I include as many DNSBLs as ...
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1answer
35 views

What's the difference between SMTP server and SMTP Relay?

What's the difference between SMTP server and SMTP Relay?If I want to send mail from a forum (XenForo) using Google SMTP (Paid Google Apps account), do I need to use Google SMTP server or Google SMTP ...
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21 views

thc hydra, redo-attempt, wont realize right password [duplicate]

I just got started with hydra a few days ago. To test it I decided to hack my gmail first so I created a list of about 20 passwords, with 1 of them being right. I type in, hydra -l myemail@gmail.com -...
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1answer
15 views

Stop open relay in Postfix/Dovecot

I have a mail server set up with Postifx/Dovecot/MariaDB in CentOS 7. It is somehow configured as an open relay. Do you have any idea how to stop this? Config files below: master.cf # # Postfix ...
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Cannot stop importing into Gmail from Outlook.com [migrated]

Problem: I get duplicate emails. I have set up import email from Gmail to Outlook.com as well as Outlook.com to Gmail. Thus, I get double the emails in Outlook.com. I want to stop this. What I want: ...
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14 views

How to prevent the X-Authenticated-Id header to be set

I am working on a server-side script (in php) which needs to send out e-mail messages (via PHPMailer) using smtp. The server needs authentication and I have a special account for that, with a minimal ...
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1answer
59 views

SMTP to Gmail Authenticated Relay not working email stuck in queue

I am following this document http://kb.eclipseinc.com/kb/how-to-configure-iis-smtp-server-to-forward-emails-using-email-account/ and in places where it was talking about ports etc i used the ...
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1answer
65 views

Gmail as postfix SMTP relay in CentOS 7

Followed these instructions: http://charlesauer.net/tutorials/centos/postfix-as-gmail-relay-centos.php And still having trouble. Everytime I send a test message, /var/log/maillog still returns: ...
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1answer
35 views

Are the emails inside the outbox folder stored locally on the machine where the mail was sent

I'm asking this question because I got curious about an email I'm sending from the office with Outlook using the Delay delivery option. When I searched for that mail at home to modify it on Outlook, I ...
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19 views

Spam mail header Analysis

I have downloaded spam dataset ,as i am working on spam detection. Below is a snapshot of Email header received. Received: from localhost (localhost [127.0.0.1]) by phobos.labs.netnoteinc.com (...
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2answers
75 views

Unable to receive external emails

Our domain subscription was cancelled this morning due to an expired credit card on the account. A slew of problems followed. We got our domain back up and running and Most of the problems have been ...
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31 views

Mails get rejected with error code 550 5.4.1 different domains

I've a online tool where different people can create things and other people can book it. So there are three mail adresses involved: My customer: customer1@gmail.com The customer of my customer: ...
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2answers
29 views

Automating email sending by using telnet & FTP on OS X CLI

Running the following script: #!/bin/bash cvs_domain=abc.com cvs_mail_server=mail.${cvs_domain} cvs_port=25 telnet $cvs_mail_server $cvs_port<<_EOF_ EHLO $cvs_domain MAIL FROM:my_mail@abc....
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26 views

How can I know whether my Windows SMTP server gets connected to its recipient server?

I have a Winodws SMTP virtual server on Windows 2012R2. It sent many emails to someone@vt.edu. However, recipients never get sent emails. I contacted the technical support at Virginia Tech and they ...
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37 views

Every other Thunderbird outgoing email fails SSL handshake

It takes me two tries to send any email with Thunderbird because it gives me this error on the first try: Sending of the message failed. The message could not be sent using Outgoing server (SMTP)...
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14 views

Seamonkey Email Client, YahooMail SMTP Outgoing Mail

I created two accounts in SeaMonkey, one gmail and 1 yahoomail. When I tried to send email from Yahoo (2nd account), a copy of that email was created in the Sent items (of course). But the problem is,...
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1answer
29 views

Can you close the SMTP port and still send emails?

Is an open SMTP port necessary when sending mails from an SMTP server? From the design perspective, in a client-server architecture, this would not be needed, since SMTP server acts as a client ...
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112 views

Unable to connect to SMTP server 421 connect error 1460

I have a 2mbps ADSL connection with MWeb on a new account and separately, I got a free 1GB capped account with Axxess some time ago. When connected to MWeb's network, I'm not able to connect to any ...
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1answer
202 views

Sending email through telnet SMTP

After I connect to one of gmail's SMTP servers (via windows cmd), when I try sending mail to myself, it keeps giving me the same error. 220 mx.google.com ESMTP u3si16129057wmg.22 - gsmtp ehlo b 250-...
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73 views

Telnet to smtp.gmail.com 25 timing out inside vagrant box

Vagrant 1.8.1, Virtualbox 5.0.16, Windows 7. Vagrant using hashicorp/precise64 image. No modifications done to Vagrantfile. Using the default NAT networking. vagrant@precise64:~$ telnet smtp.gmail....
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1answer
57 views

postfix: how to generate a bounce

Is there a way to generate a bounce programmatically? The only thing I found is "-N" flag in sendmail wrapper and bounce_template_file configuration parameter: /usr/sbin/sendmail -N failure But for ...
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43 views

Configure Sendmail as Secondary/Anonymous SMTP Solution

I have a scenario where I want to allow my clients a secondary SMTP service, e.g. they are hosted on SERVER1 and using the same server as a primary mail server, Now I want to allow them to use the ...
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1answer
111 views

SMTP relay options

I work from home and use an email client for all my work email. Up until yesterday, I was able to use my ISPs SMTP server (Verizon FiOS) to send my work-related email with any from-address I liked as ...
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Configuring postfix to work with TLS

I have a couple of questions regarding postfix config. First of all I need TLS as of the perl smtp plugin mediawiki uses, forces TLS authentication. Will it work on 25? Or what's the advised port? ...
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6answers
1k views

What diagnosis steps can I do if my emails send, but are not received, not even as spam?

I have a problem where all emails to certain recipients send but never arrive, not even as spam, with no errors, while emails to everyone else work fine. I'm stumped and am looking for ways to ...
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21 views

Google IMAP Login

I am trying to setup Outlook 2016 with my Google Account (Because I hate using Inbox for my emails and cannot get away from Google's stronghold). Now I have 2 Step Authentication enabled for my ...
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67 views

Roundcube not sending email via smtps

I am running Roundcube 1.1.4 on Debian Jessie - it all works OK apart from sending emails via my SMTPS server (which normally works OK). I use self-signed certificates. No additional Roundcube plugins ...
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20 views

External mail from windows get rejected, local mail works

I have linux server with working SMTP server (postfix)... (I can send emails to gmail when connected to it via ssh) But if I send through bmail in Windows i get this in linux mailq: BB986640FC9 ...
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73 views

CentOS - Postfix rejects incoming mails

I have VPS with Centos 6 with Postfix, Exim and Dovecot. When I try to send mail from GMail to mail account from my server I receive following error in /var/log/maillog: Feb 3 13:36:29 mobilepro ...
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1answer
45 views

Giving each domain unique IPV6 address for posfix SMTP

Today I faced a problem after setting up postfix as my mailserver and sending e-mail to a gmail email, which responded me with the following message: Our system has detected that this ...
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2answers
73 views

Can't telnet into mail server

I have a machine running CentOS. From that machine I can't telnet into a mail server. From my local machine I can do the following command: telnet mailserver.com 25 From there I can't send emails ...
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21 views

Who should sign mail with Dkim?

I have an exchange server configured to use an external smarthost to send email. If I want to complete my messages with DKIM signature should it set to my Exchage server o may I ask to my provider (...
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46 views

postfix to send email from a client

I own a domain company.com. All employees in company have gmail accounts. The domain registrar already provides email forwarding, so if I were to send something to bob@company.com, it would be ...
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13 views

SMTP cache / proxy server for server fault protection

I am trying to find something that I would install on a dedicated server that would receive SMTP requests. This software would send theses requests to my STMP server, but if the server is not online, ...
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1answer
31 views

Multiple servers on one hardware?

I have built a website and have a domain. I want to host the site on my home server. I would like to set up email like an smtp server. Can I host my site and the smtp on the same hardware? If so, what ...
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1answer
20 views

Find out SMTP of organization o365 Outlook

I have been wondering how to find a SMTP host on an Organization/School Office 365 account. This is because "Mail Flow" blocks any messages to GMail, Hotmail, Yahoo, etc. If I can set up a program ...
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49 views

Mails from webmail ends in gmail spam - can I use smtp?

I finally managed to setup my cPanel mails so that I can send from SMTP and get the mail delivered (even on Gmail, yay!) However, every time I send from one of the webmail clients Horde/Squirrelmail/...
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1answer
54 views

git-send-email Causes “Must issue a STARTTLS command first” Error

I am attempting to send a patch with git-send-email through my Postfix mail server. Unfortunately, whenever I do, I just get this error spat back to me: <recipient@example.com>: host domain....
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6answers
7k views

Why do I need an SMTP server?

Why do I need an intermediate SMTP server to send mail? Why can’t my client (Outlook, Thunderbird) send messages directly to the recipient’s SMTP domain? For example, if I have to send an email to ...
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82 views

How to pass through credentials in SMTP proxy with Postfix

I want Postfix to proxy SMTP connections from MUA on my client to another outer SMTP server. Since the outer SMTP server requires the Postfix proxy to authenticate with SMTP-AUTH, So I set my MUA's ...
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1answer
35 views

Reject all Microsoft Office attachments

I have had enough of spam coming to my server with Microsoft Office attachments. No one I care about ever sends me Microsoft Office documents so I would like to reject (with a polite message) all ...
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0answers
27 views

Spam Gets Past Gmail Server's Authentication

Below is one spam example I received today in Gmail. The authentication referred to means that a username and password (to use Google's server) were correctly provided by 110.2.164.153 at some point ...
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2answers
58 views

How to keep messages from previous Thunderbird email account?

I had an email account on first hosting server with its IMAP and SMTP. The server has been cracked and now I couldn't read emails from it. I moved my doamin to another hosting server with another ...
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103 views

Just want to send email from my Windows Server 2012, what simple SMTP server to use

I'm trying to configure SMTP on my window server 2012. I do the same as mention here (http://www.vsysad.com/2014/09/setup-and-configure-smtp-server-on-windows-server-2012/). I am trying to send test ...
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1answer
134 views

Simple mail send on Ubuntu

I have been struggling with mail function in Ubuntu. My goal is to send a test email from a terminal with a command: echo "msg" | mail -s subject sample@domain.com. I have tried to install sendmail,...
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37 views

Application mail relay vs SMTP

I'm new to this technology and I wanted to understand how application mail relay differs from SMTP. What are the requisites in order to replace SMTP with AMR in an Intranet environment ? Regards
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1answer
307 views

Which of the following protocols can use multiple TCP connections between the same client and the server?

In one of the pairs of protocols given below , both the protocols can use multiple TCP connections between the same client and the server. Which one is that? HTTP, FTP HTTP, TELNET FTP, SMTP HTTP,...
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1answer
48 views

managing port 25 in windows 8.1 home and cable modem [closed]

A cable modem has port 25 blocked. Two computers are on the local wifi network managed by the cable modem. One computer is a windows 8.1 machine that sends and receives email using tools like ...
0
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1answer
1k views

Why can I authenticate to my gmail account neither from my printer, nor from my manually configured mail user agent?

I'm trying to set up a print that will send its scans by email. I created a gmail account specifically for the purpose. However no matter which way I configure the SMTP settings, I cannot get it to ...