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.

learn more… | top users | synonyms (1)

-1
votes
0answers
7 views

How to create a catchall email address through Webmin?

I've searched quite a bit, and haven't found anything very straightforward. I'm using webmin 1.750. Some people said to install postfix (I have now done this). Should I be doing it through postfix? ...
0
votes
1answer
15 views

Helo command rejected: Host not found - Setup postfix to accept sending mails from my home server through my public server

I would like to receive system emails from my home server. So I'm trying to configure postfix to do that through my public server. My public server has a fixed IP, while my home server is in a private ...
0
votes
0answers
10 views

Two ips rotating each time an email is sent - iptables

I have two ips attempting to rotate each time an email is sent from server. The following commands say they are configured: sudo ifup venet0:0 ifup: interface venet0:0 already configured sudo ifup ...
0
votes
0answers
27 views

Exchange server: Why do a couple users have random numbers at the end of their “Windows domain\user name” and is this causing problems?

Background on the problem: I work for a company which is a Panasonic Partner. As a part of this program, Panasonic regularly sends out "Partner Alerts" to everyone who is signed up to receive them. We ...
0
votes
0answers
16 views

How to fix the dovecot error log?

I got the following error in /var/log/maillog. How to fix this issue? Sep 1 04:18:56 s166-62-40-99 dovecot: ...
1
vote
1answer
13 views

Debian, DKIM and Exim4 never returns public key

i wanted to use DKIM in an exam mailserver on debian. My DNS settings are: @ IN TXT "v=spf1 mx -all" 27564764._domainkey.example.com IN TXT "v=DKIM1; k=rsa; ...
0
votes
0answers
10 views

Configuring exchange receive connector to receive from mdaemon acting like a security mail gateway

I have the following lab. Mdaemon on 192.168.47.10, Exchange 2010 on 192.168.47.14 and a pfSense sending incoming mails to mdaemon on port 25. My domain name is example.co.cu and i need to forward all ...
-1
votes
0answers
8 views

Configure Horde in cpanel [on hold]

I have an admin panel running over c-panel server. Now i wish to configure mail services(IMAP) over it but i am facing some issues, i am completely new to this mail service part, so would appreciate ...
0
votes
0answers
22 views

Postfix: on multi-recipient e-mails of same domain, how do you remove all but one (first) address?

We have a shared IMAP mailbox for a business. Customers are not used to not having to CC tons of people with us, so they CC everybody, which creates noisy duplicates in our shared inbox. How can I ...
-4
votes
0answers
14 views

Receive mail through virtual (alias) email id [on hold]

I want that if someone(user of my client) sends a mail to the given email id (alias email id), the message should come to a domain. And I want to give client a text-field, where he can type the email ...
0
votes
1answer
19 views

PowerMTA Not starting

I have recently installed PowerMTA server on CentOS 6, every prerequisite was installed according to Document and License was entered in correctly configuration file was also correctly setup in ...
2
votes
1answer
24 views

Dovecot SSL: “unknown state”

Two weeks ago I set up a Mailserver using Dovecot and Postfix. It's a server for a organization with about 5000 mails per day. Everything works fine, but today I enabled verbose_ssl in ...
0
votes
3answers
58 views

Are there any reasons why we should not block unencrypted service ports for mail such as 25,110 & 143?

I want to block smtp 25, pop 110 & imap 143 and only use secured smtps 465, pop3s 995 & imaps 993. Are there good reasons to let port 25,110,143 open?
-6
votes
1answer
43 views

Why use both Dovecot and Postfix? [duplicate]

Just out of curiosity, there are dozens / hundreds of tutorials helping you setup a Dovecot - Postfix mail server. On the surface, both of them are email servers, why use both? Mail servers are ...
-2
votes
0answers
23 views

Exchange 2013 Receive Connector Scoping and Open Relay

I have an Exchange 2013 server which was a victim of spam infiltration, and the exchange server was being used as an open relay for unauthorized users (and domains) to remotely send spam. I have done ...
0
votes
0answers
27 views

How do i setup my server so that gmail does not mark it as spam [duplicate]

I have setup my domain mydomain.co.za and put an spf record to my server ip, example 123.456.789.123 when i send an email to google my postfix log shows Aug 24 20:39:25 myname postfix/smtp[21855]: ...
-1
votes
1answer
13 views

zimbraAdmin monitor show server from previous installation

If I open zimbraAdmin and go to configure - servers only the current server is shown. But if I go to monitor - server status there is a server from a previous zimbra installation, and all services ...
-1
votes
2answers
66 views

Reject email if “rcpt to” does not match relay_domain - Postfix

My mail server currently shows up in mxtoolbox as Open Relay. Objective: Allow SMTP connection only when RCPT TO: says example.com What changes should I make in it so that, it would reject the ...
-6
votes
1answer
56 views

Postfix not recieving mail from Gmail

I've Installed Postfix with Dovecot on CentOS 7. Everything is working good when I try to send / recieve emails from services like Outlook.. etc. However, there is a problem when I send an email from ...
1
vote
0answers
28 views

How can I reject mails coming from a fake domain or a fake user in a real domain?

I have an exchange server 2010 recently installed and I receive a test with 3 step to check the security of my server. below the test Check if my server receive from fake domain. Check if my server ...
0
votes
0answers
25 views

Account duplication happens when user id is created on active directory [on hold]

We have a setup where my active directory is in sync with Google. My email domain is managed by Google. When there is a user account created in Active directory I see two accounts created for the user ...
1
vote
1answer
13 views

Forget forwarded emails delivery errors

I have problem with configuring Sendmail, I've read a lot of topics on the net about similar problems but I didn't found a good answer for this scenario. Main problem is that my server has poor ...
1
vote
1answer
25 views

Migrating from old mail seerver to new, error “Sender address rejected: User unknown in virtual mailbox table” [closed]

I'm trying to migrate a domain from an old mail server to iRedMail, anyway I think the topic is more broadly Postfix specific. I have set up a new server based on iredmail and then I will migrate all ...
0
votes
1answer
33 views

How do I filter Exchange 2013 new-moverequest by “StatusDetail”

I am trying to make a report of "interesting" moves, errored, lagged, or slow. I'm starting with this Get-MoveRequest -ResultSize unlimited | where {$_.status -ne "Completed" -and ( ( ...
0
votes
1answer
43 views

Why mail.log is not logging to file? [duplicate]

my server yesterday started sending thousands of spam emails. I blocked it adding default_transport=No transport to the postfix main.cf. But now of course I can't send legit emails as well. I have ...
2
votes
1answer
121 views

Reverse DNS is not a valid Hostname error from MXToolBox

I can't send email messages from my server. However, I can receive email messages. I set up my server the exact same way I did many times which I've proven it works and it's pretty straightforward and ...
0
votes
1answer
32 views

Mail Delivery Failure - Reason: 571 Delivery not authorized, message refused

Good Morning, We have changed our external IP Address of our mail server earlier this week and ever since we are getting bounce backs from email addresses we can normally send to. One of the error ...
0
votes
1answer
43 views

Sending mail from perl applications with SSMTP

I am on host-server with Centos 7 and KVM virtualization. I have 2 guest systems which are in routed virtual LAN. One of them is WEB server, the other is a mail server. Web server has hostname ...
-2
votes
2answers
54 views

Setting up Google mail server on custom domain

I'd like to use Gmail for Work for my own domain and I have troubles setting it up. So, before that in my DNS config I had an "A" record (mail.example.com), pointing to the email server I used. Now, ...
-1
votes
1answer
43 views

In postfix, how to deny a specific email address from sending e-mail but still allow receiving?

The closest thing I tried was to add reject_unlisted_sender to main.conf but that also disables receiving any email to that mailbox. I want only deny sending but still allow receiving. EDIT Here's ...
0
votes
2answers
36 views

Is this a user/pass connection or an email communication connection?

I have lines like these in /var/log/messages: Jul 12 01:26:00 h2 xinetd[1596]: START: smtp pid=11253 from=::ffff:221.219.213.54 I need to know if that is an email connection like the ones being made ...
-1
votes
1answer
44 views

Change MX record to another server

I have a host-machine with Centos 7 and a guest machine with Centos 6.6. I want my guest to be a mail server on dedicated static ip for all my domains (on the same host-ip and not). P.S. I use ...
0
votes
1answer
32 views

email not being delivered for one account

I have setup a mail-in-a-box recently and it works fine for the main domain - it delivers and receives email just fine. I wanted to add another domain, so I followed the same steps [change DNS, setup ...
-4
votes
0answers
21 views

What's the port I should open to receive email in a server? [duplicate]

I installed Postfix in a Virtual Machine (managed bt Qstack). What's the port I should open to receive email messages? I want to forward email to other domains trough virtual_alias_domains / ...
-1
votes
1answer
55 views

setup postfix SMTP on amazon ec2 [closed]

Im trying to setup a postfix SMTP mail server on my amazon ec2 instance. I followed this guide http://cybart.com/how-to-install-and-configure-postfix-on-amazon-ec2/ and many others I found which ...
-1
votes
0answers
12 views

subdomains and SPF failures

I have recently moved some of my e-mail services to sub-domains (sub1.company.com, sub2.company.com) because the SPF of the main domain - company.com got full (lot's of includes and there is more ...
-2
votes
0answers
22 views

Alter all outgoing email to add return-path to it (Qmail or Postfix) [duplicate]

Is there a way (config option or program, script, etc) that can filter all outgoing email in order to add a return-path to each message sent from that server ? I would need it for eider Qmail or ...
1
vote
1answer
40 views

Dovecot - Fatal: execv(/usr/lib/dovecot/imap-login) failed: Permission denied

I'm in the process of trying to set my own mail server reasonably closely following this guide: http://sealedabstract.com/code/nsa-proof-your-e-mail-in-2-hours/ I've just started to test the ...
0
votes
1answer
35 views

Connection refused by [127.0.0.1]

I am not very good with email servers. Here is what I need: I have a mailbox at fastmail.com with my custom domain (let's call it example.com). Now I want to set up my web server to relay emails ...
1
vote
1answer
22 views

Is “QUEUE=” in /etc/sysconfig/sendmail the same as the “-q” switch in sendmail?

CentOS 5.x, SendMail 8.14.4 My Sendmail server is currently configured to retry deferred messages every hour. In /etc/sysconfig/sendmail I have the following: DAEMON=yes QUEUE=1h I don't see ...
1
vote
2answers
35 views

Is smart hosting to an A record a violation of RFC-5321 section 1?

I have a sendmail server configured to smarthost to a downstream resource. The configuration is currently: define(`SMART_HOST',`relay:[vip.example.local]')dnl Since it's sending the A record for ...
0
votes
1answer
16 views

What is the correct way to configure the SendMail SMART_HOST option to perform MX lookups?

I think this question is related to this post but I feel that it's different enough to warrant a separate post. I currently have my Sendmail server configured to send to a downstream VIP. In my ...
0
votes
1answer
26 views

What might be using my smtp port on a new CentOS machine?

I'm trying to setup a simple email server using node smtp-server. I'm the only one that's ever accessed the machine (a CentOS 6.5 box on Digital Ocean), and I've only set up 2 http servers. I'm ...
1
vote
0answers
10 views

Is DMARC helpful to me if I don't need reporting?

I have SPF and DKIM setup and working for the email domain I administer. The next recommended step is to setup DMARC since SPF and DKIM are both in place. What are the benefits of using DMARC if both ...
0
votes
1answer
53 views

Logwatch postfix report. Where does this “Deferrals” come from and how to stop it?

I'm using logwatch to monitor the logs on my server and I'm trying to make sense out of the postfix report. (See the report below.) By looking at /var/log/mail.log I saw that this mail seems to be ...
-1
votes
2answers
118 views

Dovecot is not working [closed]

I'm having a server. The server information I've given below. Linux host.com 2.6.32-531.29.2.lve1.3.11.1.el6.x86_64 #1 SMP Thu Dec 18 06:49:17 EST 2014 x86_64 x86_64 x86_64 GNU/Linux When I was ...
0
votes
0answers
48 views

Postfix Clogging Up

I have an OS X mail server running using server.app. In the background, it runs Postfix. Recently, my mail queue has been clogging up and I'm not quite sure why. I'll try to force the queue with sudo ...
-1
votes
1answer
38 views

Seperate web/mail server, mailserver won't receive emails [closed]

I have a basic set up: VPS Mailserver Domain Management This is my first experience setting up both a VPS and a separate mail server. My mail server won't receive emails. DNS A ...
4
votes
1answer
47 views

Why is sendmail adding an extra carriage return in headers?

I've got SendMail 8.14.4 running on a CentOS 5 server. A user in Japan is sending a message and when it gets processed by the server, SendMail is adding an extra carriage return for some reason. ...
-1
votes
1answer
153 views

Dovecot-core fails to start

I am attempting to follow this tutorial: https://www.digitalocean.com/community/tutorials/how-to-configure-a-mail-server-using-postfix-dovecot-mysql-and-spamassassin I believe someone before me ...