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.

learn more… | top users | synonyms

1
vote
1answer
31 views

Postfix using external smtp server problem

I am not sure if this is the right stack exchange for my question, there are multiple stack exchange were my question might fit. I have setup my postfix configuration to send my emails through an ...
0
votes
0answers
25 views

I use OpenSMTPD on OpenBSD 5.8! How can I automatically encrypt E-mail with OpenSMTPD

How can I automatically encrypt all outgoing E mail? My scenario: I use XXXX@gmail.com as my relay for all Emails my OpenSMTPD Server forwards All Emails to me as well as all Emails from somewhere to ...
1
vote
1answer
17 views

Does SSMTP cause spam issues?

I am currently using SSMTP to send email notifications from my Icinga server. I am using my web host's STMP server to send the mail, with working authentication details [ eg icinga@domain.com ] When ...
-1
votes
1answer
47 views

Why are my emails generated with Python stuck in mail queue

I'm trying to send emails programmatically with Python. The emails stay in the mail queue (mailq). Details are below. My diagnosing abilities have reached their limit. Perhaps the issue is my ISP ...
0
votes
0answers
52 views

gpg: passwordless decryption works in terminal, but not in tmux based msmtp/mutt (can't open /dev/tty)

first try: (with --no-tty in my msmtp config) (reboot) head -n 1 ~/.gnupg/gpg.conf use-agent gpg agent is started: % systemctl --user status gpg-agent.service gpg-agent.service - GnuPG private ...
0
votes
0answers
35 views

How to enable secure authentication (ssl,tls,starttls) in nullmailer 1.0.5. and upgrade nullmailer to 1.11

I am using a linux based device where we use nullmailer to send email using smtp. nullmailer version: 1.0.5 User-Agent: Mutt/1.5.19 (2009-01-05) In the existing mechanism, our smtp server does not ...
1
vote
1answer
79 views

invalid SSL_version specified at /usr/share/perl5/IO/Socket/SSL.pm line 368

SMTP SEND CRITICAL - invalid SSL_version specified at /usr/share/perl5/IO/Socket/SSL.pm line 368 I am using a nagios script /usr/lib/nagios/plugins/check_smtp_send that sends an email using gmail. ...
2
votes
1answer
88 views

Trying to send multiple text attachments via mail message

Running this script on: "Red Had Enterprise Linux Server release 5.11 (Tikanga)" Mail is: version 8.1 6/6/93 (appears quite old). Have tried various things and cannot seem to get this to work.. ...
1
vote
0answers
55 views

Configure stunnel for smtp imaps of Gmail

hope someone could help me, i'm trying to configure stunnel on Debian system for get access to my gmail account. I have read a lot and it's seem simple but i can't figure it out. I have install and ...
0
votes
1answer
25 views

Is this the correct SPF DNS TXT syntax to allow the existing email servers (DNS MX records) and to authorize the new smtp server ip-address?

v=spf1 +mx ip4:65.1.2.3 -all Domain DNS TXT records to change: product1.com : sales@product1.com otherproduct.biz : sales@otherproduct.biz Information: Both domains have DNS MX records, and ...
3
votes
1answer
46 views

What is the correct helo for a smtp server that does not receive mail and does not have a FQDN?

What is the legal and correct helo for my SMTP server. Out going email only. Behind a NAT with no inbound ports open. SMTP server does not have a FQDN. Send mail for 2 different domains We are a ...
1
vote
0answers
15 views

Dovecot… shadow - uknown user… how do I fix this

For one user in particular I have this maillog error and the user is unable to send files using SMTP WLMX002 dovecot[1402]: auth-worker(49961): shadow(user@domain.com,X.X.X.X): unknown user How do ...
1
vote
2answers
48 views

Fetchmail with local Postfix on Home-Server

a small question... I have a fully configured postfix server which have a few domains, few users, and much more. Then I have a smart host which receives all mails and send all mails. For example ...
0
votes
2answers
48 views

Can I send email in the background in Mutt while still being notified of errors?

Removing mutt's send delay I originally used mutt's built-in SMTP MTA. However, there is a considerable pause after hitting send. This can be disabled by using an external MTA with set ...
0
votes
1answer
69 views

sendmail smtp auth simple,why fail auth?

On sendmail i did this for smtp auth sasl is running root 1609 1 0 05:16 ? 00:00:00 /usr/sbin/saslauthd -a pam -c -m /var/run/saslauthd -n 5 root 1610 1609 0 05:16 ? ...
1
vote
1answer
66 views

How can I safely send email over encrypted connection from the command line?

I found the following related questions on the stackexchange network: stackoverflow - Connecting to smtp.gmail.com via command line serverfault - Using nc.exe (NetCat) to send emails to secured SMTP ...
0
votes
1answer
79 views

Postfix does not work with TLS but Dovecot does

I have posted this question on Sever Fault but as soon as I mentioned that I have a control panel installed on my server (even though it has nothing to do with the issue) my question was closed. Here ...
1
vote
2answers
54 views

Where to configure my smtp server in Mutt utility

I have my smtp server -- smtp.drdb.com which is registered in DNS. I need to setup Mutt utility in my RHEL 6 server. Where should I input my smtp server details in mutt.rc file so that I can send ...
0
votes
3answers
191 views

postfix filter incoming mails based on 'mail from' and 'rcpt to'

I want to reject emails to my postfix server based on more than one criteria, specifically I want to block emails from Russian email addresses (or that contain Cyrillic characters, but this I suspect ...
1
vote
1answer
105 views

Sendmail issues “530 Authentication required” error message when authinfo is supplied

sender_email - email address that does not exist, but must be used as FROM address, because receiver host rejects emails from other emails. receiver_email - email that is supposed to receive the sent ...
0
votes
1answer
46 views

Cannot make sendmail to use a remote SMTP server [closed]

I followed the following guide on how to setup sendmail to use a remote SMTP server and authenticate: https://www.smtp2go.com/docs/sendmail/ However, sendmail shows that it sends emails out, but ...
0
votes
1answer
46 views

Postfix Email Troubleshooting

I'm having some trouble changing the server I use for Postfix emails. I've installed postfix on the Linux server (CentOS 5) and setup as follows. I added the settings to the /etc/postfix/main.cf ...
3
votes
0answers
35 views

How to force use SMTP servers in Alpine?

Does anybody know how to force Alpine to use a particular SMTP server from the config list? It seems to choose the first server in the SMTP list in config, but I want to be able to choose the SMTP ...
1
vote
0answers
90 views

Iptables - Limit SMTP output traffic

I'd like to limit the output smtp traffic of my server (Debian). For example : only 10 mails per seconds. I want to use Iptables for this purpose. I tried : iptables -A OUTPUT -p tcp --syn --dport ...
0
votes
1answer
627 views

Why use user@privatedomain@smtp.gmail.com in Mutt configuration file?

I cannot authenticate to my university smtps server with Mutt, with the same error message as http://askubuntu.com/questions/81924/sasl-authentication-failed-with-mutt-and-gmail-why/ ...
2
votes
2answers
138 views

IPTABLES to allow ssh, ftp, pop, etc from one static IP address with HTTP/SSL open to public

This is my setting in /etc/sysconfig/iptables: #start of my iptables # Generated by iptables-save v1.2.11 on Wed May 27 00:31:22 2015 *mangle :PREROUTING ACCEPT [130933577:29488298585] :INPUT ...
1
vote
1answer
690 views

Postfix with smtp authentication failing

I'm currently in the process of updating my new server to do the same tasks as my original older server (new server is running Debian wheezy, old server is running Debian squeeze). The issue I'm ...
1
vote
1answer
2k views

Centos - Sendmail smtp smarthost with authentication

I would like to setup sendmail to send out mail using an external smtp-server with authentication. I've searched for solutions, but can't seem to find what I need. There are several examples about ...
-1
votes
1answer
112 views

how to prevent cron job email splitting into multiple lines

CRON has emailed me the extract below : May 12 04:27:54 rpi postfix/smtpd[9343]: NOQUEUE: reject: RCPT from unknown[95.211.213.214]: 504 5.5.2 <WIN-HBAL58UG0JH>: Helo command rejected: need ...
0
votes
0answers
101 views

Centos 6 and postfix: Internal emails deferred / telnet timed out from SSH

The problem is, that I have a VPS with centOS 6 installed, and I can send emails to anyone, but my own exchange server, Apr 29 11:50:30 amazonnet postfix/smtp[16535]: 2B6FF3CC49A: to=, ...
2
votes
1answer
64 views

Local E-Mail sink

I do have multiple mail accounts (personal, university, work, …). Currently I'm connecting from every device (notebook, smart phone, tablet,…) to each of them via IMAP . Setting up multiple IMAP and ...
0
votes
0answers
159 views

Dbmail / Postfix Send mail to local adress

I have a FreeBSD Server with Postfix and DBmail. The mail system is working perfectly except for one thing: I cannnot send an email from domain1.com to domain2.com if they are both hosted on the same ...
1
vote
1answer
119 views

Postfix / Dovecot Mail appears in logs, but not in its respective folder

I'm currently trying to set up Postfix with Dovecot, but something does not seem to work the way it should be. For some reason, mails I sent to my mail account appear in the logs, but do not become ...
1
vote
1answer
122 views

FreeBSD Reinstall postfix with mysql support

I have installed postfix using the ports tree without making modifications to anything. In my main.cf file i can't specify any 'Mysql:/' arguments because postfix does not have mysql support. Now i ...
2
votes
1answer
455 views

assigning two ports to one service in firewalld

Is there a way to assign two ports to the same service in firewalld? For example, I would like for the SMTP service to listen on both port 25 and port 465. My first instinct is to change ...
0
votes
1answer
2k views

setting up a relay port for postfix smtp on CentOS 7

A CentOS 7 server has postfix, dovecot, and mailx installed. I am able to make an IMAP connection to the server from my remote Thunderbird client running on my local devbox. But I am not able to ...
0
votes
1answer
192 views

postfix logs: SMTP sessions stopping after RCPT TO

I took a look at my postfix logs and I've noticed an odd occurrence lately: SMTP sessions that seem to end right after the RCPT TO, as such: postfix/smtpd[11333]: > unknown[XXX.XXX.238.86]: 220 ...
1
vote
1answer
7k views

Relay access denied when using SMTP to external recipients POSTFIX FREEBSD

i am trying to send an email with my freebsd server using postfix and dbmail to an external adress. I have noticed the following things: MYSERVER -> MYSERVER = OKAY EXTERNALSERVER -> MYSERVER = ...
0
votes
0answers
52 views

DBmail / Postfix : Relay Acces Denied

I am currently setting up a FreeBSD mail server with DBmail and Postfix. When i try to send an email from Hotmail.com to my server is gives this error: Feb 28 10:53:31 keroth postfix/smtpd[1848]: ...
0
votes
0answers
3k views

Where can I find either a)my SMTP log and / or b)determine/toggle whether or not SMTP is being logged at all

My server sends out emails via sendmail or SMTP, depending on the situation. I am trying to find logs for SMTP. Sources indicate that I should look at /var/log/maillog ...
1
vote
1answer
193 views

exim4 on debian 7.8 sent mail never arrives @gmail

I followed the instruction on this page Debian Exim and configured my exim with a single file via the dpkg-reconfigure exim4-config setup. Now I can send mails between local users (from root to ...
0
votes
1answer
57 views

FreeBSD dbmail , postfix port 110 error (220)

I am currently setting up a FreeBSD mail server with DBMAIL and Postfix. I have forwarded port 25,110 and 587 to this server. When I try to log in using pop3 on port 110 my mail program does not find ...
0
votes
2answers
54 views

Mail is not going in some domain

We are using Phpmailr function to sending mail after registration . When we are using gmail,hotmail mail ID for registration mail is going perfectly. But when we are using AOL or some other domain ...
2
votes
1answer
574 views

how to find out the full path of the command from the result of lsof -i

lsof is a great utility, just now started using it. lsof -i | grep smtp => this give the following result. httpd.pl 212548 global 3u IPv4 893092369 0t0 TCP ...
0
votes
1answer
280 views

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): ...
0
votes
1answer
98 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 ...
0
votes
0answers
86 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 ...
0
votes
1answer
168 views

exim + courier + squirrelmail mail delivery in wrong directories

I just installed an E-Mailserver using exim for SMTP, courier(-imap) for fetching mails via IMAPv4 and squirrelmail as web client for the end user. Everything works fine. But when I sent an E-Mail to ...
0
votes
1answer
260 views

Can I view my Microsoft Exchange Online Archive via Davmail in Thunderbird

I have successfully set up Davmail on Ubuntu 14 and am able to read, receive and send mail on my Exchange account in Thunderbird. This page was a big help!: ...
1
vote
1answer
170 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 ...