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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87 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 ...
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1answer
55 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 ...
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1answer
87 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 ...
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1answer
56 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 ...
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1answer
55 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. ...
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1answer
113 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 ...
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2answers
256 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 ...
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1answer
273 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 ...
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0answers
81 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 ...
2
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2answers
712 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 ...
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2answers
155 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 ...
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1answer
38 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 ...
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0answers
97 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 ...
2
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0answers
295 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
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1answer
38 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, ...
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2answers
224 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 ...
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1answer
70 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
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1answer
64 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.) ...
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1answer
195 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 ...
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2answers
68 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 ...
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2answers
169 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 ...
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1answer
310 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 ...
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0answers
27 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 ...
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1answer
203 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 ...
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3answers
78 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 ...
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1answer
45 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. ...
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1answer
82 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 ...
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0answers
109 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 ...
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2answers
137 views

What should I set in postfix's myhostname / mydestination?

I am using Ubuntu, on a web server need to send out email (via sendgrid), this server never receive any external email, and I've the following hostname settings /etc/hostname = example /etc/hosts = ...
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votes
1answer
115 views

Postfix + Mailq: Mailbox Full no bounce

I have a mail server and alot of clients. Some of my clients have many email accounts and dont use some of them. So, I have alot of mailboxes full, which receives dozens of emails every day. So, my ...
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1answer
931 views

ubuntu PostFix + Dovecot mail server

/log/mail.log Jun 23 10:38:05 mail postfix/smtpd[60639]: connect from mail.faisal.asia[127.0.0.1] Jun 23 10:38:05 mail postfix/smtpd[60639]: disconnect from mail.faisal.asia[127.0.0.1] Jun 23 ...
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1answer
472 views

How can you test a backup / secondary MX server?

I'm wanting to set up a secondary MX server using Postfix but I am wondering what is the best way to test this prior to putting into production (by adding its MX entry)? One possible way is to test ...
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1answer
40 views

Can I use the same domain to send outgoing only emails from another server?

The company currently uses gMail apps for incoming/outgoing emails. It has sending limits which I need to get around. Can I set up (say) postfix for outgoing only email on the local server? Can it ...
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1answer
96 views

Deliver email from local development server

I'm working on a website development and need to test some email stuff (send email to register users just me and I'm using my personal email address for this purpose). I'm not an expert so I only have ...
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1answer
44 views

Setting Postfix's sender_dependent_relayhost without a registered domain

I've been trying to link up SES with my EC2 instance (that has no DNS record) and am trying to figure out how to jerry-rig my sender_dependent_relayhost. Since I do NOT have a DNS record that ...
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0answers
41 views

spamass-milter and opendkim use tons of memory

I recently set up a mail server using postfix, dovecot, opendkim, spamassassin, and spamass-milter, and it works fine, but spamass-milter and opendkim are using lots of memory: Above: opendkim and ...
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2answers
32 views

Advance DNS - Redirecting Emails to new webhost

I am not to sure if this question belongs here but I will surely find out soon enough. I have two web hosts (Not sure why it has been setup this way but it has). I do not want to use the original web ...
1
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1answer
322 views

Have Postfix bounce certain addresses with a custom message and forward all other messages to another server

We have a list of users who no longer have mailboxes in our Exchange environment. We want to have a very specific reply to these users with a possible custom variable. I thought Postfix would ...
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24 views

Poor IMAP performances

I'm experiencing very poor performances with my Mail Server when executing some specific and mandatory IMAP commands. Right now when I try to run the SELECT command on a folder with 4k+ email, the ...
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1answer
249 views

What is stopping postfix from delivering mail to the local transport agent?

I have the following settings ( as grabbed from my postconf -n output) alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no broken_sasl_auth_clients = ...
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2answers
917 views

Distribution list with external email sent from outside

I have Exchange Server 2010 in my environment and I have the following problem with Distribution Lists. I have created one Distribution List which includes email addresses from our company and ...
0
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1answer
141 views

Allow sender spoofing for specific user on Postfix server with LDAP

So I have a Postfix server that authenticates users against an LDAP directory. This works great so far, but one of the mail adresses should be allowed to set another sender address. All users on ...
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1answer
52 views

PermError SPF Too Many Lookups and Reduction

My current SPF record is as follows: v=spf1 mx include:servers.mcsv.net include:xero.com -all The above cause the SPF validation to fail. Using http://mxtoolbox.com/SuperTool.aspx?action=txt, I ...
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votes
1answer
1k views

Dovecot: no auth attempts in 0 secs (IMAP protocol)

I'm having a lot of problems configuring dovecot ony vps. I'm already able to send email using port 110 and to receive email using port 25, but I can't connect using port 993 and 995. I'm using ...
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1answer
33 views

Postfix server to receive emails for anyonymous user

I have a postfix server configured with imap. Only the recipient with the user account in the system is accepted. For example: rcpt to: test@localhost will yield the following error: 550 5.1.1 ...
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0answers
29 views

Access the failing addresses within bounce_message_file in exim

We are running exim version 4.72 I'm using bounce_message_file to customize our bounce messages, like desribed in the documentation Within this bounce message template I can access various variables ...
2
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1answer
85 views

Maximum length of MAIL FROM address

When sending out emails with a MAIL FROM address > 81 characters I receive bounce messages from some MTAs: 501 Syntax error - Badly formatted address. (in reply to MAIL FROM command) As soon as ...
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0answers
346 views

553-Message filtered - HELO Name issue?

I am having major issues sending from my SBS2011 machine to Message labs server-13.tower-134.messagelabs.com #553-Message filtered. Refer to the Troubleshooting page at ...
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1answer
133 views

Exim should save the id of a failed message to a database (or at least pipe it to a shell script)

The Setup We are running exim version 4.72 on Debian Squeeze 6 (Squeeze) (LTS). Exim is used for outgoing emails only - it does not handle emails from other servers/domains - it only handles ...
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0answers
44 views

Exchange Full Access issue

I was just hired as a System Admin for a small company. They use Exchange 2010 for their Mail Server. I've never had a permission issue like this with Exchange because I worked for a larger firm with ...