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).

Filter by
Sorted by
Tagged with
-1
votes
1answer
32 views

postfix nothing send email port 25

I am trying to configure the Postfix Mail server. Ready I made the configuration in postfix and devecot (imap / pop). I can receive emails on my server, but I can't send emails to other servers. im ...
0
votes
0answers
49 views

Unable to Install Postal Mail Server on Ubuntu 20.04

I am using Digital Ocean VPS, having Ubuntu 20.04.1 and I am trying to build a new SMTP on Postal using Putty (SSH). When I copy paste the following command to install Postal, it is given me the error ...
0
votes
0answers
11 views

Undelivered Mail Returned using mail -s on bash

first off I'm using Ubuntu 20.04 and the following script to test sending mail from the command terminal: #!/usr/bin/env bash for name in *.txt do find | grep *.txt >> namefile.log done for ...
0
votes
1answer
70 views

530,5.7.0SMTP server error: MAIL FROM command failed Detail: Authentication Required

PHP Mail error with the message: 530,5.7.0SMTP server error: MAIL FROM command failed Detail: Authentication Required Following are the key sections of my PHP Script. new PHPMailer(true) Host as '...
0
votes
0answers
22 views

emails marked as junk/spam sent by postfix with valid dmarc, dkim, spf and correct PTR records

There are a ton of questions related to this issue - and I have gone through almost each one yet this issue persists and I have no idea how to proceed further. My mail server is setup with postfix, I ...
0
votes
1answer
75 views

Postfix Can Send But Cannot Receive Mail, Port 25 is Filtered

I seem to have a problem with port 25 inbound connection. My ISP confirmed that port 25 is open. Yet, when I tested with nmap, I get the following results Testing nmap with public IP shows port 25 is ...
0
votes
3answers
95 views

Kmail not sending mail

I am asking this here because I could not find a solution anywhere on the web. KMail can currently receive my email but will not send any (either to mailing lists or to a regular address) The error it ...
0
votes
0answers
491 views

Emails on Send-only mail server not sending

I've been trying to setup my own send-only mail server so I could send emails using PHP scripts, but I've been running into some issues. Whenever I send a test email to my gmail account, it doesn't go ...
1
vote
0answers
140 views

Port opened with ufw shown closed by nmap

I need to open port 465 on my PC. I ran the following succesfully. root@user:/home/user# ufw allow 465 Rule added Rule added (v6) But when I scan with nmap. I get- root@user:/home/user# nmap -p465 ...
0
votes
0answers
43 views

mailutils does not send email

I added a few lines in /etc/postfix/main.cf ... relayhost = [smtp.gmail.com]:587 ... smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = ...
0
votes
0answers
506 views

How to forward all local SMTP requests on port 25 to a remote SMTP server on port 587

I'm trying to solve a problem with a bulky program that is, for some reason, only sending email over port 25, even when port 587 is specified. In this answer, someone suggests using the windows ...
3
votes
1answer
346 views

How to add a Reply To: header to mail when using postfix and Mailgun as SMTP server?

I'm trying to add a Reply To: header to mail when using postfix on Ubuntu 19 and SMTP for mailing via Mailgun. Mail works fine when testing with swak, but mail to my final destination @protonmail.com ...
0
votes
0answers
234 views

How to install msmtpd on Ubuntu 18.04?

I'm able to install msmtp just find on Ubuntu 18.04 with: apt install msmtp msmtp-mta ca-certificates, however I'm not finding Minimal SMTP server (msmtpd) anywhere on the filesystem. It also does not ...
0
votes
2answers
133 views

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 ...
-1
votes
1answer
25 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 ...
0
votes
1answer
421 views

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 ...
1
vote
1answer
162 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. ...
0
votes
1answer
54 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)]
0
votes
0answers
387 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" ...
1
vote
0answers
201 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 ...
0
votes
1answer
118 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 ...
2
votes
1answer
1k 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 ...
0
votes
0answers
136 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?
0
votes
1answer
652 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 ...
1
vote
0answers
506 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....
2
votes
3answers
515 views

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 ...
0
votes
1answer
1k 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 ...
0
votes
1answer
836 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/...
0
votes
1answer
673 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 ...
2
votes
0answers
290 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 ...
6
votes
3answers
8k 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.
2
votes
0answers
210 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 ...
0
votes
0answers
536 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 ...
1
vote
1answer
9k 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' ...
0
votes
1answer
6k 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 ...
1
vote
1answer
192 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-...
1
vote
2answers
1k 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....
2
votes
0answers
353 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 ...
0
votes
1answer
433 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 ...
0
votes
1answer
523 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 ...
0
votes
0answers
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 ...
0
votes
1answer
3k 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 ...
0
votes
2answers
3k 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 ...
1
vote
1answer
5k 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 ...
0
votes
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 ...
0
votes
0answers
521 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 ...
1
vote
0answers
292 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 ...
1
vote
0answers
142 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 ...
0
votes
2answers
767 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 ...
1
vote
0answers
531 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 ...