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Questions tagged [smtp]

SMTP (Simple Mail Transfer Protocol) is a protocol that facilitates communication with a server application capable of sending electronic mail (e-mail).

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15 views

Need help with enable TLS in Postfix for SMTP Relay connector to Office365

Need help with enable TLS in Postfix for SMTP Relay connector to Office365 I am new to TLS. I`ve successfully configured my Postfix SMTP Relay to relay emails to my internal Application by using ...
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2answers
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Mail body is missing, when tried from terminal

Mail body is missing while sending a mail from Ubuntu terminal as: echo "Test smtp" | sudo ssmtp -vvv test@test.com The mail is received, but it's body is empty. When I tried manually using the ...
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sSMTP gives 550 error every time I try to email someone

I've been trying to set up a script where it sends the contents of a text file to my email: benthetechguy@yahoo.com. I set up sSMTP with the email: executeorder66@yahoo.com. What i'm trying to do is ...
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1answer
17 views

Connect to postfix from two different servers with two different user/pass combinations

I have 3 vps servers: two of them hosting a website each and a third one hosts postfix. VPS [1]: domainone.com VPS [2]: domaintwo.com VPS [3]: smtp.domainthree.com How do i connect from vps [1] to ...
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postfix on Ubuntu 16.04 LTS can't find sasl_password or sasl_password.db

I followed this slightly outdated tutorial for setting up my ubuntu server as a send-only mail server using my FastMail account as an SMTP relay but I ran into some problems. When I start the postfix ...
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1answer
80 views

How to configure nullmailer to work with mailchimp?

As my title said i have some problem with configuration of nullmailer. Basicaly I have been following this website. I have made an account on Mailchimp - where I have send succesfully the test mail. ...
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1answer
39 views

Would anyone know the source of this error in mediawiki?

Error sending mail: authentication failure [SMTP: Invalid response code received from server (code: 535, response: Authentication credentials invalid)]
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104 views

Can't send email from Ubuntu 18.04.2 LTS inside Vmware [duplicate]

I have Ubuntu 18.04.2 LTS installed on Vmware, inside Windows. Using terminal, I'm trying to send a test e-mail using this command: echo "Test Email message body" | mail -s "Email test subject" ...
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0answers
93 views

Send mail notification Ubuntu 18.10 [duplicate]

I've set up unattended upgrades, and wish to receive an email on every update run to make sure it's running. For whatever reason, ssmtp isn't installing so isn't an option. How do I configure my ...
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1answer
71 views

Postfix--running--SMTPS still is closed

I have created a certificate and applied all the necessary changes to configuration files in the postfix.main and postfix.master files. I also edited the dovecot.file to enable SASL-AUTH. I have made ...
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1answer
327 views

How can i setup and configure sendmail SMTP server to send bulk emails in UBUNTU?

I am working on an assignment in which i have to send bulk emails with sendmail SMTP server. I have tries many tutorial to setup sendmail server to send bulk emails but nothing helps me. Can anyone ...
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67 views

Gmail does not receive mail from my server

Install Postfix on my server You have set all settings But the problem is that the server sends mail to all servers except Gmail Have any of you experienced this problem before? How can I solve it?
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1answer
356 views

Forward “local mails” to external SMTP server

I have a standalone 18.04 server just for running a simple LAMP website. Sometimes when I log in to the server I get notified that I have mail (like cron/at job outputs), and then I read them using ...
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0answers
291 views

Exim: use /etc/hosts to resolve domain names

I have just installed exim4, and my /etc/hosts file looks like this: 127.0.0.1 localhost 127.0.1.1 mycomputer 192.168.100.5 rpi.mydomain.com However, when I run exim -bt john@rpi.mydomain....
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3answers
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Can't resolve a domain in Ubuntu, but can in Windows?

A couple of days ago, I stopped being able to download my email from comcast via pop3. Every time I ask Thunderbird to get my mail, it says "Failed to connect to mail.comcast.net". Thing is, I can ...
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1answer
761 views

Sending email via gmail smtp ubuntu 18.04 php

In RoR in order to send email from the application, we simply provide smtp settings for gmail and the server start using them to send emails. I have bought Active Super Shop Multi-vendor CMS which ...
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321 views

Postfix/Dovecot/Sasl authentication issues with SMTP

I have been trying to get my mail server to work for the last few days. I have postfix/dovecot/sasl on ubuntu 16.04 configured with virtual domains and user. The SSL certificate comes from letsencrypt ...
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1answer
453 views

How to deny authentication on port 25 in Exim mail server

I have the following config in exim.cnf daemon_smtp_ports = 25:465 ######################## Exim TLS tls_advertise_hosts = * tls_on_connect_ports = 465 tls_certificate=/opt/ssl/...
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1answer
491 views

Simple Mail/SMTP Server with DKIM

I want o set on my Linux machine(Ubuntu Server 18.04) a simple email server. I need to: be able to create emails be able to forward (receive in one email) and sent to others Not deliver itself ...
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0answers
164 views

Postfix SMTP lookup in /etc/services failed

I am running a postfix server on Ubuntu 16.04. Probably related to an update the mail server did not work anymore. The log tells: postfix/master[4590]: fatal: 127.0.0.1:smtp: Servname not supported ...
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3answers
4k views

Why was heirloom-mailx deleted from Ubuntu 18.04?

It broke my mail agent, since I need to redirect to an external smtp server, and nothing else seems to do that properly.
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0answers
102 views

How to set the from header for outgoing system email messages that are sent via msmtp on Ubuntu 16.04 LTS

I have setup msmtp on Ubuntu 16.04 LTS to deliver system email messages (cron, etc) to my inbox using an external smtp server. I use the packages msmtp-mta, ca-certificates, heirloom-mailx The ...
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451 views

How to set a local smtp server to send anonymous e-mails

My attempt is to send an e-mail from [non_existing_email@address.com] to [address]@[random.com], which exists, in an unauthorized way. I have tried generic solutions i.e. 1) which is the basic case ...
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1answer
6k views

Reverse DNS does not match SMTP Banner

I installed Postfix on my Ubuntu 16.04 server ( DigitalOcean ) , for my site: example.com I added an A record mail.example.com and an MX record for example.com handled by mail.example.com it' ...
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1answer
3k views

How to check whether port 25 is open or not from ssh access to server [duplicate]

I have ssh access to my Linux server and I want to check whether port 25 open or not. I discussed with hosting service provide and they said port 25 is open. I checked using PHP script for port 25 ...
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1answer
141 views

Erratic 'connection refused'

I am unable to send emails from smtp-mail.outlook.com ufw and antivirus are disabled: Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp-...
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2answers
770 views

DNS problem trying to ping or send email using smtp-mail.outlook.com after upgrade to 17.10

After upgrading to Ubuntu 17.10, I find I am unable to send emails using the confusingly named Outlook (i.e. what used to be Hotmail) SMTP server. When I try to ping the hostname smtp-mail.outlook....
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0answers
317 views

postfix relay SMTP oulook.com

I have a Ubuntu 14.04.5, and I'm trying to config the postfix relay an external SMTP with [smtp-mail.outlook.com]:587. I tried to search online and did some changes, but it still not working. Here ...
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1answer
412 views

Postfix / Dovecot / MySQL / Ubuntu 16.04 - Receiving via IMAP, but not sending

I've reached the point where I think I've read every post/article on this and am stuck. I'm relatively new to Ubuntu, and Linux in general, but I've been trying to tackle one problem at a time. The ...
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1answer
370 views

SendMail 503 error Ubuntu [“Unrecognized host name gmail.com.”]

Unrecognized host name gmail.com. 503 5.0.0 Need RCPT (recipient) This error if i send mail in any email *@gmail.com How do I enable sending mail to all addresses? news@ovz1:~$ nslookup gmail.com ...
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1k views

Send outgoing mail from docker container

We have installed and configured Postfix as a send only SMTP server to send only outgoing mails from the docker container in the same server. Now we want secure our SMTP server with user id and ...
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1answer
2k views

Exim not able to listen on port 465 or 587 for TLS connection

I am configuring Exim on a Ubuntu server to send and receive mails via TLS. Followed many guides which shows on how to configure Exim with TLS but still my Exim doesn't listen on 465 or 587 Exim ...
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1answer
2k views

Email client, “Mutt”, is not sending messages?

I recently installed mutt on my computer... I configured my muttrc to be like this: set ssl_starttls=yes set ssl_force_tls=yes set imap_user = 'username@gmail.com' set imap_pass = 'password' set from ...
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1answer
3k views

smtp error 421 4.4.2 Error: timeout exceeded after few minutes and some bytes received - Ubuntu 16.04

I get the following error while trying to send the email using telnet from the client xxxx-01 with the mail body exceeding certain amount of text. The same length of the body works fine on the ...
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1answer
22 views

Does email queue affect speed of email traffic for other users on shared server?

I have a guy on the server who hit the mailbox storage limit, so the inbound emails got stuck in the email queue. How urgently do I need to act on this problem and does he threaten the performance for ...
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0answers
450 views

(Ubuntu Server 16.04) Slow sending smtp with attachment

Hi! I have postfix + dovecot How to speed up the upload attachment file from smtp? Inbox mail very fast and send mail without attachment very fast. Send with attachment very slow :( Upload 20Mb = up ...
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0answers
224 views

SMTP Gateway/Relay in Cloud with Local SMTP Server behind DHCP

I am having some difficulty figuring out how to setup a mail server in AWS to act as the front-end to another mail server on my local network. Since I am behind a dynamic IP address (no options for ...
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0answers
121 views

SMTP cannot send outgoing mail to google and yahoo

I installed the ubuntu server 14.04 lts. I have opened port of 465 and 587 on /etc/postfix/main.cf and master.cf. SMTP cannot send outgoing mail to google and yahoo. but it received outside mail from ...
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2answers
631 views

How to tell whether any smtp server like postfix, ssmtp is already installed on Ubuntu 16.04?

I have moodle 3.1 set up on Ubuntu 16.04 minimal version. Moodle is unable to send any email and errors are pointing to smtp configuration. The mail notifications from moodle worked by default in dev ...
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0answers
431 views

How to white list postfix smtp senders

My mail server (postfix, ubuntu, courier) got compromised by spammers that sent plenty of dummy mails to many recipients, The spammers used two different ways: using real domain on my server but ...
2
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0answers
404 views

Postfix Outgoing Email Authentication

I have a VPS that I'm using as a webserver and an email server. I have an issue with postfix. It's not asking for a password on outgoing email from an unauthorized domain. This is a telnet call from ...
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2answers
5k views

Can't connect to smtp.gmail.com on port 465 or 587

I have an Ubuntu 14.04 (Trusty Tahr) is mounted on AWS and i cannot connect to the SMTP GMail service vía: SSL(465): ## $ telnet smtp.gmail.com 465 ## Trying 74.125.28.109... Trying 74.125.28.108... ...
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1answer
822 views

outgoing email filtering on ubuntu server 14.04

I have a assignment of configuring outgoing email filtering on ubuntu 14.04. We have incoming email filtering is enable using postfix and spamassassin. I have searched google but does not find exact ...
2
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0answers
96 views

postfix 2.11, cannot receive emails from specific domain

helo, I am over 3 days now working on a solution. Our server is getting emails normally from around the world, except from one domain(our ISP free emails server domain). It would not be a problem but ...
1
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1answer
578 views

how to setup send-only email server on ubuntu

I have a project coming soon and I need to send an email to around 300K people who might have the interest in the project. However I need to send them an email in the same day (the opening day) and as ...
1
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1answer
4k views

How to configure nullmailer to work with gmx

Last time I used postfix, and it was a mess until everything was configured to send my root-mail to my gmx-address .. however in the end it worked. This time I wanted to prevent that mess by using ...
1
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0answers
589 views

Postfix logs to remote server

On my Ubuntu 14.04 server, I'm using Postfix as a front-end mailserver, and I would like to send all mail related info, including email addresses, to a remote host. In the file /etc/rsyslog.d/50-...
0
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1answer
525 views

Enable Exim system filter with split configuration

I would like to enable system-wide filtering so I can define some custom spam filtering. I am using the split configuration for Exim but cannot see where to define the system filter. Here would ...
1
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0answers
173 views

Configuring email for a development machine

Almost every article I have found on this subject, including those on 'ask ubunutu', go along the lines of "follow this (deadlink to an article) BUT modify this that and the other". Regardless to say, ...
5
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1answer
20k views

How to change default FROM address for mail command using sSMTP?

I have installed: sudo apt-get install ssmtp sudo apt-get install mailutils When I use command: echo "something" | mail -s "testing email" email@example.com The generated email have From field set ...