Refers to the hardware or software that make up a server dedicated to sending and receiving emails. Many popular modern email servers bundle other functionality for contacts and calendaring along email delivery.

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0answers
14 views

Error sending email. Address is missing domain

I am trying to install an email server on a VPS box, using the following programs: Sendmail+Dovecot+Horde Now, I believe all my configurations were correct. Yet, when trying to send emails from ...
-4
votes
0answers
32 views

Why would you choose POP over IMAP [on hold]

(I'm not being vague or asking for opinions I genuinely want an actual answer on some situations where POP would be better than IMAP for a mail server/client to help me understand the advantages and ...
-1
votes
0answers
39 views

POP/IMAP HA solution for 5k users [on hold]

I want to build simple, cheap HA solution for 5000 users with postfix/dovecot. Each user will have 1.3 GB mailbox (maildir) storage quota. All of the users will use POP and also plus half of them will ...
1
vote
0answers
12 views

Connecting Dovecot2 to ldap

I'm currently trying to connect dovecot 2 with postfix to an ldap directory. Currently I'm having an issue in the communication itself. Dovecot starts, but does not authorize the users. I'm using the ...
0
votes
0answers
2 views

Cyrus Deleting mailbox with @ Mailbox does not exist

After finally being able to log on with cyradm I noticed a mailbox was created: localhost> lm info*miniheli*org info@miniheli/org (\HasNoChildren) When trying to remove the mailbox I get an ...
-2
votes
0answers
26 views

Company emails automaticly go in junk with Gmail & Outlook

I have went through every user guide and followed any advice i can find in order to try and stop our emails automatic going in junk mail. Below is a copy of the email received in my junk mail box ...
0
votes
1answer
12 views

Why does m4 error “linux-gnu.m4 - No such file or directory” appear the first time after updating sendmail.mc?

SendMail 8.14.x | CentOS 5.x I've noticed that if I manually update /etc/mail/sendmail.mc (for example, enable TLS support), and then bounce sendmail, I get the following error: Shutting down ...
0
votes
1answer
22 views

How to get reverse DNS to work for multiple IPs and domains on Windows Server EC2 instance?

I have a EC2 instance setup running hMailServer. I have a primary IP on the system that I am using for example1.com email. I would like to also add a second domain example2.com using a different IP ...
-2
votes
0answers
37 views

My smtp server is spammed? [duplicate]

I have a server and the postfix client on it. Since several days, I noticed a lot of processes running there. When checked, there are a lot of emails sent. Here is an example from the mail log: Aug ...
1
vote
1answer
40 views

The correct PTR record in DNS

I'm confused with my DNS records. I own a domain (e.g. example.com).I've set A record for my SMTP server (e.g. smtp.example.com) for outgoing emails. The email address is (e.g. ...
1
vote
1answer
59 views

What happens inbetween SMTP and POP3?

I understand SMTP, and to a lesser degree POP3, but I feel like I'm missing a large chunk inbetween. I see this image on a Microsoft page: and I feel like what I'm missing is the "Internet" part. ...
1
vote
1answer
22 views

Using Google Business Email simultaneously with other mail server for one domain

My partner is having some problems with delivering and receiving emails. They asked me to check Google Business Email, if it can provide a solution. My question is: Is it possible to split users into ...
-3
votes
1answer
40 views

Rainloop: arbitrary sender address? [closed]

I just set up my mailserver (Postfix as SMTP and Dovecot for IMAP) and as web frontend I use Rainloop - which also works very well! My setup is that I have only very few real users (actualy at the ...
0
votes
1answer
13 views

Using virtualmin to manage account address books

I have configured several email accounts with Virtualmin and they're all working really well via IMAP and the web interface. In case it matters, they are configured using dovecot and postfix. ...
-4
votes
0answers
24 views

Setting up standard DNS/MX records for Exchange

I'm trying to setup a mail server (Exchange), and we don't currently have a static IP, just a dynamic one. So from what I've read, running a mail server from dynamic IP causes problems as some mail ...
0
votes
1answer
55 views

On debian, how to set up a MTA like exim that allows per user smarthost configuration?

I have a problem setting up something that I think would be cool. I have a server (Debian Wheezy) and I would like to let my users send email from their smarthosts. From what I have read, exim allow ...
-2
votes
1answer
40 views

How do I recieve incoming mail on an email address in Linux [closed]

Background: My department does a lot of communication using email to ask and answer questions. We have an internal StackOverflow type board set up but it's a headache for them to log in to the VPN and ...
0
votes
1answer
40 views

Hotmail not accepting my emails from my email server. [dyn dns] [duplicate]

I am using DynDNS to do name resolution and would like to send emails to Hotmail and Gmail. Gmail marks them as spam, while Hotmail just blocks everything. How do I make Gmail and Hotmail know that ...
0
votes
1answer
47 views
+50

Replying to an email from a domain email alias

We have a multi-store set up in nopCommerce 3.20 with SSL enabled. Our environment info as follows, Windows 2012 R2 VPS Server. .Net 4.5, SQL Server 2012 Express Multi SSL in Same IP using ...
0
votes
1answer
53 views

Ubuntu 14.04 Postfix Access denied

Sorry to write here I'm really using it as a last resort. I have recently got my hands on a dedicated server. I'm not good with linux (not at all), but I wanted to set up a full server (Web, mail, ...
0
votes
1answer
24 views

Can A Single Shared Mailbox Have Multiple ProxyAddress Entries/Aliases?

Exchange 2010 We have a shared mailbox in our environment (foo@subdomain.example.com) that was renamed to foo2@example.com. This ended up causing issues for applications that relied on the old SMTP ...
-5
votes
1answer
104 views

How to setup SMTP server to allow mailing to any recipient? [closed]

I have a windows server, acting as a web server and mail server. For the mailserver I use hmailserver and works fine recieving emails but not so good sending emails because I cannot setup reverse DNS ...
0
votes
1answer
50 views

Postfix virtual mailbox base, uid, gid — good user and group choice?

I often see tutorials for setting up Postfix with the virtual mailbox delivery agent on Linux that instruct to create a new disabled-login user and group to own virtual mailboxes in ...
0
votes
1answer
53 views

what're the proper DNS record settings for google apps so that my site hosted on another company can send email that won't consider spam [closed]

I'm using Google apps email and I have a website that's hosted on shared hosting company. How should I configure the DNS records so that incoming mail will get to Google but at the same time email ...
0
votes
1answer
52 views

How to setup Postfix with Opendkim to automatically sign PHP emails?

I've found that: submitted emails are signed properly (ie those sent with MUA's like Outlook and Thunderbird) command-line sent emails are signed properly emails sent with PHP, in particular case ...
1
vote
1answer
53 views

Does sendmail send everything to downstream smarthost in “single file”?

CentOS 5.x / SendMail 8.14.x I have a SendMail server that delivers all outbound mail to a downstream smarthost in the cloud: define(`SMART_HOST',`relay:[example.blah.com]')dnl example.blah.com ...
0
votes
1answer
31 views

Remove X-SA-Exim Headers from out going emails

I am using EXIM4 on Ubuntu 12.04 with Spamassassin for sending emails. Any emails will be relayed through Amazon SES service. But I want to hide the bellow headers in outgoing emails. ...
-1
votes
1answer
32 views

Unexpected failure, please try later (in reply to end of DATA command)

while trying to send emails to the following address some_user@f-gs.jazztel.es i always get the following error message. Could any one tell where can i look in order to find what's going wrong? This ...
2
votes
2answers
214 views

(Postfix + Dovecot) All emails to @aol.com being deferred

I'm running a dovecot/postfix mail server on debian and am having some issues. Everything is working fine except all emails to @aol.com are being deferred. The error code gave me: "The Reverse DNS ...
1
vote
1answer
69 views

Postfix 5.7.1 Unable to relay [deliver internal mail directly]

I have the following scenario: serverA = RHEL5 using Sendmail serverB = RHEL6 using Postfix serverC = RHEL6 using Postfix gwsmtp = relayhost example.com = domain name As we are migrating from ...
0
votes
0answers
38 views

Server sometimes doesn't receives e-mail, with error 451

One of my customers tried to send me an e-mail with his e-mail address that I didn't received. He received a Delivery Status Notification (Delay). I only received the message 2 days later In the ...
1
vote
2answers
102 views

How to rate limit outgoing SMTP connections for Postfix

I have a postfix instance running on a VM. The VM provider shuts us down if we exceed a threshold of SMTP connections per minute - something like 10. In a typical day we might send 1000 messages, so ...
1
vote
2answers
115 views

Spammer spoofed localhost? Or server fail? How do I secure against this?

I noticed a spammer got through postgrey AND SpamAssassin, which was very strange. I examined /var/log/mail.log and saw some suspect lines: Log below, or on Pastebin: http://pastebin.com/k7sKnvGE ...
0
votes
1answer
20 views

Dovecot login with username and no @domain.com extension

I have dovecot setup and working, but i can only login as a linux user without the @domain.com extension. e.g joe.bloggs is a user on the linux system. i can login using this as the imap username and ...
1
vote
0answers
58 views

Nagios 3.5 can't send notification email despite nagios logs ok / centos6

I spent hours trying to make nagios send email notification. my contact configuration is quite simple : I juste have one : nagiosadmin, and he is the default contact. In /var/log/nagios.log, nagios ...
0
votes
0answers
134 views

send email from ubuntu: msmtp VS esmtp VS ssmtp (and nullmailer)

What are the main differences between these 3 packages that have a very similar name? msmtp VS esmtp VS ssmtp (and eventually nullmailer) Thanks
0
votes
1answer
37 views

DNS and mail server actions for restoring web access to mails

A domain name, say example.com, is registered to company ONE. The Address record of the DNS for that domain has been changed, to map example.com with an IP of a server of company TWO. Consequently, ...
1
vote
2answers
71 views

exim4 reveals a mail alias when remote server rejects spam

I'm running exim4 (4.76) on Ubuntu 12.0.4.4. exim4 is set up to handle mail for mydomain.com. I have aliases set up that forward a@mydomain.com to b@gmail.com. I have SpamAssassin set up to work in ...
0
votes
1answer
35 views

Daily block report from assp for each mail user

I want to automatically send daily block report from assp to each mail user. I've set the BlockReportFile parameter as: file:files/blockreportlist.txt My blockreportlist.txt has the following ...
2
votes
1answer
40 views

Postfix Active Queue vs qshape

I have been looking in vain, in Postfix documentation and otherwise, to understand the difference in output between the mailq command and qshape. (The underlying problem is slow mail delivery.) ...
-1
votes
1answer
104 views

My server does not listen to port 25, even though iptables allows smtp traffic [closed]

My public server accepts traffic and relays them to other machines on the network with iptables PREROUTING rules. I recently added a mail server at 192.168.1.10 and made its iptables rules to accept ...
1
vote
2answers
56 views

Simplest Way to Setup Email for Various Domains

I'm beginning to use Mandrill to send out transactional emails from my various domains. Now what I'd like is a way to receive these emails simply w/out setting up a mail server on my linux boxes. I'm ...
0
votes
2answers
92 views

X-Postfix; Mailboxes not found when mail comes from others servers

I had installed and configured dovecot, postfix, and postfixadmin step by step from this tutorial on my server (CentOS6). I can create virtual mailboxes as well now and can login to roundcubemail, I ...
0
votes
1answer
79 views

'Please configure a fully qualified domain name' Error

I am running an nginx website on a virtual host and I am trying to set up iRedMail, but this is the error I get when running bash iRedMail.sh. < ERROR > Please configure a fully qualified ...
0
votes
0answers
21 views

HMailServer recepient list is broken to 25

I have created an rule to block emails which contains more than 55 recipients. When I added a rule with a run function as the action, I always get the number of recipient as 25. (Eg: if there are 60 ...
1
vote
1answer
63 views

Use pfSense for outgoing mail?

How/Can/Should I use my pfSense router as an outgoing mail server? I have several webservers and devices on my internal network that need to send mail out to the Internet. However, I don't need a ...
0
votes
3answers
66 views

How can we migrate outlook emails to Google domains

Our custom domain's Microsoft Mail server To Google App Mail server migration: We have the Microsoft Exchange custom domain mail server for our business which has been created as a free service ...
-2
votes
1answer
41 views

Email server domain name best practice [closed]

Is it a good idea to use a subdomain or an entirely different domain name for sending generated emails such as registration, password reset...? So that the main domain doesn't get marked for spam. ...
1
vote
1answer
70 views

Exim4 setup not working with piping

I'm trying to setup exim4 on the server, so that it can receive mail for a couple sub domains, and I want to pipe that to a PHP script. I want all incoming mail to be processed through my custom ...
0
votes
0answers
63 views

How to send emails without ending up in Junk/Spam folder

I have installed a mail server in order to send e-mails using my own domain name. I've read many articles about how not to end up in Junk folder. I have done what those articles said: Added MX ...