SMTP is a protocol built upon TCP/IP, used for outgoing email transmissions, and email relaying. It uses ports 25 (clear) and 465 (SSL) by default.

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Mutt not sending email when specifying smtp server

I am trying to use mutt as my email client, and it works fine for my gmail account. But when I use my work email, it does not send the emails. It doesn't give any error, it just doesn't send them. The ...
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SMTP issues - unable to connect : CentOS 6.5, Postfix, Dovecot, MySQL

I'm trying to setup an email server on a CentOS system with Postfix, Dovecot and MySQL. I'm following this article for an Ubuntu system: ...
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1answer
45 views

How to configure SMTP with postfix with user and pass

I'm looking for a way to enable postfix (or any other mail delivery system) in which I can easily have aliases (user and domain aliases), and in which I can have an external user send mails through ...
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1answer
21 views

can i get imap access using just postfix and mailx?

I have postfix and mailx installed on a CentOS 7 server. I am able to send and receive email from the command line using the mailx command. I am also able to read email in each user's inbox using ...
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1answer
34 views

how to set up my mail

I'm just trying to figure out how to use the mail command from the command shell. I've got Ubuntu 12.04 on my laptop. I've been entering the following: user@hostname:~$ mail ...
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1answer
55 views

Is it safe to remove “received” header?

Is it safe to remove "received" fields created by my mail server for all outgoing mail? For example like this (all "received" headers from my server are deleted by postfix "smtp_header"checks"): ...
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1answer
1k views

SMTP connectivity issue in Zenoss (“Connection unexpectedly closed”)

I am using Zenoss for monitoring purpose. I have been using its mail service for a long time. Suddenly my mail service in zenoss stopped and started showing <class ...
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1answer
696 views

Exim4 as smarthost with SSL?

I want to use exim4 as a smarthost to send email using an smtp mail account over ssl. I've seen the hosts_require_tls option, but I need SSL and not TLS. How should I do this?
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IMAP Dovecot cannot connect

I am trying to set up my own mail server (for 'fun'). I followed this tutorial to the bone. But I get this error message: imap-login: Disconnected (auth failed, 2 attempts in 9 secs): ...
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1answer
43 views

Emails not sending to one specific domain

We have a AWS server where emails are delivered to domains other than our own domain. I have confirm that I can send an email to my gmail account but I can't send to my hosted gmail account. So for ...
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157 views

mailx: nss-config-dir=/etc/pki/nssdb/: No such file or directory

I am trying to send email using mailx using remote SMTP server (in my case it is office365 SMTP Server). Here is the command: # echo "THis is the Body of the email" | mailx -v -s "This is email ...
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197 views

How to configure the “mail” command to use an SMTP relay server without using sendmail service?

Since I new to redhat ver 6 linux I wanted to know how I can configure our web server that is running redhat to used out exchange 2010 relay. I already configure our exchange 2010 to allow our web ...
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1answer
130 views

Exim4 550-Verification failed - how to allow any sender?

Mail sent from a daemon on my server connecting to exim4 daemon light using SMTP seems to be being frozen. In the exim4 log: 2014-10-01 09:52:19 1XZKKJ-00049R-8p <= noreply@example.com H=localhost ...
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1answer
385 views

How can I use CNAME in Bind properly?

I'm new to Bind/DNS and want to point/map SMTP, webmail and IMAP to my domain but a check in nslookup is failing. How can I nslookup SMTP this way? The error I get is: smtp.stylez24.com: NXDOMAIN ...
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1answer
107 views

Blanket blocking SMTP with whitelist

So using a VPS environment, whereby we need to block outbound SMTP by default (spammers), with the ability to unblock when needed. We have found some scripts eg: iptables -I FORWARD 1 -d $VPS_IP -p ...
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SMTP works via Mail client but not via openssl

I'm trying to troubleshoot an SMTP issue. My credentials work fine via the OS X Mail client (and in other areas), so the credentials are definitely good. However, when I try to submit them via: ...
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0answers
412 views

Impossible to send mail to microsoft (hotmail, live …)

I cannot send mail to hotmail with my postfix server. I can send and receive mail from gmail and others, but not hotmail. I made an "Authentication Report" on auth-results@verifier.port25.com: ...
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0answers
3k views

SMTP Auth - SASL on Dovecot, Postfix and CentOS 6.2 (and Open-Xchange)

I am trying to get open SASL to work on CentOS 6.2. I followed this tutorial: http://wiki.centos.org/HowTos/postfix_sasl I suspect it works perfectly for CentOS 5.x so all I really need is an update ...
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203 views

fetchmail to log complete messages AND pass to mda

I couldn't seem to tell from the fetchmail man page or http://www.catb.org/~esr/fetchmail/fetchmail-man.html#7 whether --bsmtp <filename>.bsmtp.log, applied from cli/cronjob, and --mda ...
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0answers
356 views

Sendmail configuration with user mapping on Solaris

I have the following: host1.intra.net which has sendmail and users: user1, user2 & user3. It is running SunOS 5.10. host2.intra.net which has SMTP server. No authentication, no encryption. Email ...
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18 views

Postfix multi IP/Domain SMTP Helo'ing

We have Postfix running with two domain and each domain has own IP so it's isolated. But Spamhuaus blocked my IP and saying you are sending "localhost.localdomain" HELO I am already using ...
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What is error code 68 for msmtp and which problems may provoke it?

Sometimes, when I send mails (from alot MUA making use of msmtp) I get the following error message: failed to send: msmtp --account=FOO -t failed with code 68: A process has ended with a ...
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54 views

Hotmail not receiving emails from a script, but works from the server

I have a working mail server running Debian stable, the following elements are working. SPF DKIM rDNS My IP is not listed in any backlist, I used: mxtoolbox.com for all this. My problem: Sending ...
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82 views

Confirm DavMail connection

I am using DavMail to connect to my employers Outlook servers. Before I attempt to configure the email client to work with DavMail, I want to confirm that DavMail has been configured properly and is ...
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273 views

How to configure postfix to send mail to external SMTP server?

I have a machine with http://phabricator.org/ set up on it and I would like to set up postfix to enable e-mail sending to my company's mailboxes (as for notification emails coming from e.g. ...
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94 views

ssh log sent to email in Cygwin

I am using Cygwin in Windows 7. I am trying to make my syslog-ng daemon send a ssh log via email to me when ever someone tries to log into my computer. I tried using the code below (entered into ...
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124 views

How to disable SMTP auth plain for Citadel 8.20 on Slackware 14.0?

How do I turn off SMTP AUTH PLAIN for Citadel 8.20 on Slackware 14.0? If I set up postfix to handle SMTP would this allow me to not have SMTP auth plain enabled
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9 views

how to setup smtp server in Intranet sub-domain?

I would like to setup an SMTP server in a Linux system to be used by an application to send emails to users and process their replies. Our organisation uses MS Exchange and they don't want to setup ...
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19 views

Linux SMTP Server For Java Application

We currently have an e-mail processing application written in Java running on a Windows server that we are looking to migrate to a Linux server. The current Windows server has the IIS SMTP service ...
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23 views

my domain server instead of localhost

I was using localhostin my script for sendmail. Now I am not allowed to use that. I have got a domain hosted at the same hosting company. How do I rewrite the portion of the script ...
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29 views

Postfix - send email from catch-all adress

I have a domain with a catch-all address. Let's say every mail with @example.com as destination-domain will be routed to my primary address. That is working fine with postfix and virtual addresses. ...
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47 views

Can You Send Mail With MSMTP Without Putting the Location, ISP, and Hostname in Header?

I've been testing sending mail with mutt and msmtp. I've noticed when replying to a message I sent with msmtp, my state, hostname, and isp show up in the In-Reply-To: header ...
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38 views

How to receive emails on CentOS 5 server?

I've installed postfix with this nice tutorial http://wiki.centos.org/HowTos/postfix and postfix and dovecot are up and running. I set up user maildir as tutorial suggested. Now I can check my ...
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307 views

Connection refused - connect(2)

I have set SMTP settings in both config/environments/production.rb and development.rb also i have added the settings in config/initializers/setup_mail.rb: config.action_mailer.default_url_options = { ...
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SMTP Issue: did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA

We had a urgent requirement for creating a mail server to send mail for our Portal application using Liferay. The mail account will be an administrative account to maintain the portal. I was able to ...