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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2 views

Moving a mail server to a KVM guest

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 ...
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1answer
20 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 ...
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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 / ...
0
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0answers
16 views

setup postfix SMTP on amazon ec2

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 ...
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0answers
11 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 ...
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0answers
17 views

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

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 ...
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0answers
12 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 ...
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0answers
14 views

IPSConfig - simple username for an email account [on hold]

I'm using ISPConfig for my private web and email vServer. The email accounts use as username the entire email address like user@example.com. Now i would like to use gmail-like plus-addressing / ...
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0answers
10 views

show all webserver email on my website ? How It is possible if possible what are doing (we use php script) [closed]

show all webserver email on my website ? How It is possible if possible what are doing (we use php script). We crate a crm for email we wont if user send email by gmail id than this email show on ...
0
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1answer
11 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
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1answer
17 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
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1answer
25 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 ...
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1answer
10 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 ...
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1answer
21 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 ...
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0answers
32 views

How to turn on SMTP server on windows without depending on IIS? [closed]

I am trying to find a way to enable/configure SMTP server on my windows 2008 R2 server. I would like to eventually have a php script that connect to this service/read/send emails. I found an ...
1
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0answers
8 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
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1answer
30 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 ...
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2answers
71 views

Dovecot is not working [on hold]

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
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0answers
41 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
37 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. ...
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0answers
47 views

Postfix / Dovecot not allowing external connections

I configured Dovecot and Postfix following https://www.digitalocean.com/community/tutorials/how-to-configure-a-mail-server-using-postfix-dovecot-mysql-and-spamassassin However, I am unable to connect ...
-1
votes
1answer
50 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 ...
1
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1answer
23 views

exim: How to reject spam mail depending on destination domain

Currently, I have exim set up to mark spam mail, and reject spam mail with high scores, using these ACL instructions in the acl_smtp_data ACL: warn condition = ${if ...
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0answers
8 views

hmailserver not receiving any email

I followed all setup instructions and also probable know issues page but nothing helps. I have checked that hmailserver has a correct public hostname same as found in the mxrecord within our ...
-1
votes
1answer
36 views

Email Going Missing

I've setup Postfix for email delivery on a client's server and made sure that our PTR records, SPF, and reverse DNS is all configured correctly. As far as I can tell, we're doing everything correctly ...
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3answers
78 views

How much overhead does having infinite email aliases cause on the email server?

I was wondering if allowing users to have infinite number of email aliases have much overhead on the email server. For example, my mail email address could be vlad@vladmail.com but I could also use ...
0
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1answer
53 views

Fixing invalid DNS records for mail server with SSL certificate

Ok, so the question name is a bit weird but I wasn't quite sure how to word it. I have a machine with the hostname foo.example.com with an SSL certificate for the domain mail.example.com. I have also ...
-1
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0answers
14 views

gmail is filtering mail from my server to spam [duplicate]

I am really stuck here and connot find away around this gmail spam filter. Just some things that i have done: checked blacklists (not on any) Adding SPF Recoards (working) Adding DomainKeys & ...
0
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1answer
29 views

Sendmail sends unsolicited emails [duplicate]

I have a problem with sendmail. All of the sudden it started sending emails that its not supposed to send (obviaou spam messages about viagra, porn etc.). I checked some tools that supposedly check ...
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0answers
30 views

Exim Email hacked or Backscatter attack

I have undertaken an Exim Server for a client, this morning I Woke up to about 100 bounce backs from Hotmail with the following: "Undelivered Mail Returned to Sender" Googling I have come across ...
1
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0answers
18 views

Mail Server Memory buffer error

From time to time, my mail server stops sending any new mails. When this happened, I find the below error log, Jun 22 23:10:18 myserver saslauthd[3967]: DEBUG: auth_pam: pam_authenticate failed: ...
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votes
0answers
31 views

Postfix - ability to send mail from alias address? [migrated]

I have a mail server with Postifx (and dovecot) setup, on which there is an alias address (say alias@example.com) which forwards mail to my main email (myname@gmail.com). This works fine, and all mail ...
0
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1answer
30 views

Sending an email to multiple recipients via a mail relay, while hiding the recipients

Our software sends emails using Exchange. Typically each email foes to multiple recipients and we just send one email with multiple "to" addresses. We're moving to an SMTP-based email relay, where we ...
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1answer
38 views

Is it possible to make me send an email by opening a malicious email? [closed]

I know I don't have much info on this problem/question so I will delete if everyone downvotes or votes to close/delete. Is it possible for someone to make an email look like I sent it simply by me ...
0
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1answer
61 views

How to add allowed relay IPs for Windows SMTP using command line or script

I have a long list of IP addresses I need to add as allowed relays to the built-in SMTP service on Windows Server 2008 R2 (IIS 7.5, but SMTP uses the old IIS 6.0 manager) I know how to add allowed ...
0
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1answer
29 views

Postfix dynamically set Relay Host [duplicate]

Does anyone know of a way to dynamically set the relay host when sending mail through Postfix? At what point does Postfix set the relay host? Is there some way that I can tell Postfix to use a relay ...
1
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0answers
29 views

IMAP Proxy for a Server on Windows 7

I have configured a set-up of Hmailserver and Horde Groupware Webmail Solution on my test server which runs Windows 7. Everything is up and running smoothly but I'm encountering two minor issues: In ...
2
votes
1answer
28 views

How to make Postfix skipping some recipient's hosts as unreachable?

I would be really happy to learn how to make Postfix to "remember" that certain host is unreachable at the moment, so it would be good if we didn't perform any new connection attempts to this host for ...
0
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1answer
116 views

Hmailserver and Outlook 2013 can send but not receive any emails in POP3 or IMAP

I'm having problems receiving any email from outlook. I can send email through smtp using comcast (my isp) without a problem, but I can't receive any email using either personal pop3 configured in ...
1
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1answer
22 views

Exim4 intercept all outgoing mail

I have a LAMP stack set up on a Debian 8 (jessie) machine. I'm trying to find a way of intercepting all outgoing mail sent by PHP (through sendmail) and instead of sending it out, deliver it to my ...
0
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1answer
51 views

Outbound SMTP email not being delivered, but still disappearing from the queue and pickup folder

After setting up my smtp server on a Windows 2012 server r2 on port 587. I tested the email functions by creating a text file labeled email with the following code inside: From:admin@mydomain.com ...
0
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0answers
26 views

Figuring out why prodigy.net DNSBL is flagging me? [duplicate]

For the last 10 days, I've been unable to send mail to sbcglobal.net addresses from brinckerhoff.org (192.81.130.145). The responses from the sbcglobal.net MX (which turns out to be a prodigy.net ...
5
votes
2answers
197 views

Is there a graceful way to pick up new changes in sendmail?

Is there a graceful way to have Sendmail reload/process configuration changes from sendmail.mc without completely restarting services and potentially impacting smtp delivery that's in progress at that ...
2
votes
1answer
66 views

is there any way for MS-TNEF headers to be added to email in transit or receipt?

My coworkers have been complaining about receiving email from a certain company without formatting. I see the formatting just fine. Digging in, the differences appear to be that I receive email that ...
1
vote
1answer
49 views

Postfix behind a relay to handle incoming and outgoing mail with /etc/aliases

I'm trying to setup postfix on a Linux machine (Debian 8 with Postfix 2.11). But I have some troubles getting /etc/aliases to work correctly. The setup is as follows: A MS Exchange server is the ...
0
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1answer
23 views

How to resolve “Domain shares an MX record (mx2.zoho.com) for a mail exchange which will not accept mail to the administrator”

I have found one of our domains on a spam list, http://rfc-clueless.org/. It states that: RFC2 is not a spam list. Each of our curated lists track compliance with specific requirements of RFCs ...
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1answer
72 views

Postfix setup for LAN only [closed]

I have Ubuntu on which I installed Postfix. Postfix packet is up and running. I'm trying to make a simple e-mail system to work between a few LAN computers. Basically, I need to have some outlook ...
1
vote
1answer
48 views

Mails not being received. status=deferred (lost connection with 127.0.0.1

I have a MiaB box with about 30 email boxes. This errror pops up in /var/log/mail.err but with no other information. WARNING! Error in process_request eval block: /usr/sbin/spampd: write error ...
1
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1answer
52 views

PTR Record setup with separate incoming and outgoing servers [duplicate]

The situation: Even though SPF, DKIM, and the entire mail formatting is optimized to score 10/10 on mail-tester, many outgoing mails are marked as spam in yahoo and outlook. The primary server sends ...