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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1answer
410 views

Postfix virtual domains and Cyrus for imap

I am setting up a email server on a centos box where I am using the virtual(8) delivery agent within postfix so that I dont need to create a unix user for each email address, and I have set up Cyrus ...
1
vote
1answer
148 views

Dovecot - Unexpected messages order after move

There is Dovecot service on the server. I had moved messages in user mailbox manually from one to another. Now I am experiencing some sorting problem on iOS device. For example: I have mail 2 days ...
1
vote
1answer
708 views

User login URL for newkly installed Zimbra mail server

I have managed to install Zimbra 8.0.7 on my Ubuntu 12.0.4 LTS server (I had to rebuild my machine and reinstall the OS, so that no other servers other than Zimbra are running - how to reinstall ...
0
votes
1answer
1k views

Sending to gmail with TLS and self signed certificate

Since many provider switched to TLS only connections, I cannot deliver to gmail anymore with a default plaintext postfix setup. My question is, can I use valid TLS / does google accept TLS with a ...
0
votes
0answers
75 views

postfix smarthost mixed with usage of external mailserver

In a SOHO setup I've got a mailserver with fetchmail, dovecot, roundcube and postfix running. Fetchmail fetches the mails from the isp, postfix and dovecot handle the rest. Postifx sends emails in a ...
0
votes
3answers
319 views

Exchange 2013 attachments too big?

I am having the toughest time sending large attachments, everywhere I have checked my file size limit for send/receive is 100mb but yet users are unable to receive files even at the size of 14mb. I'm ...
2
votes
1answer
2k views

Is it possible to receive inbound emails using Mandrill?

I am using Mandrill mail server for sending emails to users and I have my own domain added to Mandrill to send out mails. Suppose I have configured Mandrill to use info@mydomain.com to send out emails ...
0
votes
1answer
270 views

Unable to clear sendmail mqueue-client

drwxr-xr-x 2 smmsp smmsp 4.0K May 6 23:31 mqueue drwxrws--- 2 smmsp smmsp 29M May 8 10:40 mqueue-client As you can see mqueue-client is filled with 29 megabytes of unsent mail. This seems to ...
0
votes
1answer
45 views

What domain to set in rDNS

I have a few different domains on a shared IP address. One of them is having trouble sending email, as certain mail servers reject the email for not having rDNS set up properly. The thing is there ...
2
votes
1answer
67 views

IMAP Email issue - Not logging in with correct password

A little while ago, my email stopped working all of a sudden. The email is hosted on a cPanel server, and it seems to be just my accounts (I have 2 different emails, on 2 domains that are both not ...
0
votes
0answers
25 views

How to create a mailbox on a sub-domain with Google Apps?

I would like to create a mail address (a simple mail redirect would do just fine) for foo@bar.example.com instead of foo@example.com for a system where Google Apps is in place. How could this be ...
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votes
2answers
27 views

i keep seeing system users trying to receive email in logs for postfix

I only do email alias forwarding in /etc/postfix/virtual which doesn't have any mention of 'user1' its more "foo@mydomain.com me@gmail.com" and works fine. ==> mail.warn <== May 1 19:20:48 ...
1
vote
1answer
85 views

Overriding selected recipients using postfix

Is it possible to have some kind of regex match and replace, like it is possible for outgoing mails for incoming, too? I am already able to replace the from field for outgoings, by using the ...
0
votes
1answer
136 views

Saving email from cPanel and integrating it to postfix.

I have a shared hosting environment with cPanel installed managing all email creation, forwarding and all other tasks. But now I have moved to VPS using CentOs and already installed postfix, dovecot, ...
1
vote
1answer
4k views

postfix[error] :Sender address rejected: User unknown in virtual mailbox table

I install an application, that it needed smtp information for sending mail, I provide smtp user, password and host for that application, but when it tried to send mail this error had occurred in the ...
0
votes
1answer
652 views

Helo command rejected: Host not found - even though i don't have configured reject_unknown_helo_hostname

My Server is sending Registration-Success-Mails to our users. Most of them arrive, but recently one E-Mail to a specific domain remains in the mailq with the following error (host ...
-1
votes
1answer
277 views

Dovecot service doesn't start

I follow these steps to install a postfix/dovecot/mysql mail service: https://www.dropbox.com/s/c2q64gndb9dwpmm/Postfix__Dovecot.pdf When i need to restart a dovecot service and view "mail.log" file. ...
1
vote
1answer
54 views

Heartbleed self-test for mailserver

The internet is now inundated by sites like this: https://ssl-tools.net/heartbleed-test Which is great, but these then immediately publish the vulnerable domains. I have a number of private ...
-1
votes
1answer
63 views

Postfix record recipient if unable to deliver or bounced

Help would be greatly appreciated. I am not a server admin but I have been tasked with making a means of auto-removing a email recipient from the database containing a table with a list of emails, ...
-2
votes
1answer
126 views

Leaving postfix 'mydomain' & 'hostname' empty in this scenario [closed]

I have a VPS server that only deals with email hosting. This server does not have any designated domain name pointing to it. Its only one VPS with one IP address. I am running CentOS 6.5 Minimal, ...
4
votes
1answer
291 views

Mail Server Storage Backend: Filesystem VS Database

I am trying to compare mail server software to decide which to use at the ISP where I work. I'm confused mainly about which storage backend is better for such use (again, at an ISP, i.e expected large ...
10
votes
1answer
512 views

Benefits to having a sole email VPS server

I have around 5 websites hosted in a VPS server, and for some reason I bought another VPS server recently just to host the emails for those 5 websites. I would like to know the pros and cons of having ...
3
votes
1answer
1k views

Setting myhostname and Mydomain in postfix for mutiple domains

I have 5 domain names currently pointing to my email server, which is running CentOS 6.5 with Postfix, Dovecot installed. Although I am now only able to receive emails but not send (for reasons I ...
-2
votes
2answers
78 views

Do I need SMTP when using Postfix/Dovecot? [closed]

I have setup Postfix and Dovecot. Microsoft outlook tells me it cannot find the SMTP server. I thought dovecot would handle all the deliveries? Do I need to allow postfix to listen to external ...
0
votes
0answers
98 views

migrating to new server, would like to keep sending email from existing server

Hello I'm in the process of moving my site to a new host (ie new IP). I run a social site that sends a large volume of (valid) email, and I have built up a good sending reputation with my current IP ...
1
vote
2answers
53 views

Postfix sending and receiving in strange way.

I have an email server, running on CentOS 6.5, 32bit system, with Postfix and Dovecot running along all their dependencies. Let's assume my domain is www.anw.com I have created A record in this ...
1
vote
1answer
72 views

exim4 redirect router, fallback if redirected delivery fails

I run an exim4 instance that is the primary MX for my domain and receives email from the public Internet. Mail for my users is forwarded on to other email addresses - I use the redirect router and ...
-1
votes
2answers
41 views

Handling emails in a separet email servers [closed]

This is a problem about maintaining an all-email VPS server. First, I have two VPS hosts right now, both running CentOS 6.5, 32bit system. one for web hosting and other for email only. The reason ...
0
votes
0answers
28 views

Courier custom queuetime (bounce time) for some mails

I have a customer that wants me to deliver email on their behalf. The customer wishes for our MTA (Courier) to stop attempting delivery and bounce an email after one day. I am to deliver to the ...
0
votes
1answer
51 views

How I can set the errors in spanish language on postfix server email?

I have a postfix servers in my network and very much users not read the english lenguage, and I want set the errors in spanish language. My version of postfix email servers is: mail_version = 2.9.6 ...
-2
votes
1answer
1k views

Multiple mail servers for a single domain [closed]

Running a "DNS scan" to make sure my DNS zones are setup "correctly" led to the suggestion by the tool to run more than one mail server for redundancy. It got me thinking about how one would implement ...
0
votes
1answer
28 views

postfix multiple recipients for the one address

I'm running postfix on centos and in my /etc/postfix/address I have email@domain.com username which works and now I want two people to be on that list now. I've tried email@domain.com username, ...
0
votes
1answer
22 views

Redirecting emails based on alias to different mail server/store

We are a pretty small startup which is involved with providing mail services as part of the portfolio. Up to now, all our C-level officer's emails have been going through our own mail server product ...
0
votes
1answer
141 views

Setting MX entries for Failover [closed]

I have a GoDaddy domain as "example.com". I wanted to have my own DNS server for the sub domain secure.example.com. So I added a "A" record "NS" pointing to my IP and a NS record "Secure" pointed to ...
-2
votes
1answer
44 views

Removing non-0 priority MX records

I have MX records set up as such: 0: domain.com (runs of the webhost, really bad) 1: GOOGLE ... google I somehow accidentally added the Google Apps mx servers, btu didn't change the priority 0 ...
0
votes
1answer
130 views

Attack from strange IP address, how to block?

Looking through the mail logs I've noticed a lot of these: Apr 7 11:33:25 s123456 pop3d: IMAP connect from @ [::ffff:192.96.206.9]checkmailpasswd: FAILED: web14p3 - short names not allowed from @ ...
1
vote
2answers
276 views

How to incrementally migrate email accounts from qmail server to exchange server

The scenario is I need to migrate mailboxes from a qmail server to exchange server. I can use imapsync for that. But the issue is after the DNS change (i.e when DNS changed from old qmail server to ...
1
vote
1answer
247 views

Spf passes or fails depending on receiver address

I have postfix with dovecot set up on Ubuntu 13.10. I send emails via a node application (using email-templates). If I send an email from noreply@mydomain.com to myacccount@gmail.com (email 1), the ...
0
votes
1answer
55 views

How to log mail client with Dovecot / Postfix

Does anyone know if it's possible to have Dovecot or Postfix output the mail client of a user? In Dovecot's variables list, I cannot find anything in that direction.
0
votes
1answer
187 views

Mail Server with different IP than Web Server [closed]

I recently had a problem. Somebody hacked a Wordpress Site of one of my customers and sent about 70.000 Spam Emails. So my Server IP got blacklisted on some Providers. I'm looking now for a solution ...
0
votes
1answer
76 views

Amavis sending Paypal payment emails to postmaster. Are they classified as spam/virus?

Some days ago i was reading some docs about amavis and decided to fine tune its configuration. As i'm new to amavis i probably setted some statements in the wrong way so last days i've been recieving ...
-1
votes
1answer
36 views

Is open relay to local users the right way to work on port 25?

today i was checking my server Postfix restrictions when i realized anyone who meets a very basic requirements like not being in a black list, also anyone who communicates to the server properly, etc. ...
0
votes
1answer
29 views

Postfix not mapping UNIX users with @ character

What I want to achieve: On my production server, I'm planning to have multiple users and multiple domains and my best option is to create full email-address-format unix user - when John Doe requests ...
0
votes
1answer
299 views

postfix not sending mail from localhost

I am having a problem sending mail from the server. The issue was spotted because as php mail() is failing to deliver any messages. I have checked the mail log on the server and found the following; ...
0
votes
1answer
1k views

Disable Cipher SSL3_RSA_WITH_SEED_SHA in Postfix

I want to disable cipher SSL3_RSA_WITH_SEED_SHA in Postfix. I have got in main.cf smtpd_tls_ciphers = high smtpd_tls_protocols = TLSv1,!SSLv2,!SSLv3 smtpd_tls_exclude_ciphers = aNULL, DES, 3DES, ...
0
votes
2answers
992 views

Mailserver and MX records in Cloudflare

I built my own mail server using postfix/dovecot in CentOS 6, this is my postconf -n results: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin ...
0
votes
2answers
111 views

S/MIME certificate to minimize email bounce

I have a website hosted in a vps that sends informative emails to my clientes, maybe 20-40 emails per day. Since few weeks ago some sent emails are bouncing with the following error: This message ...
0
votes
0answers
33 views

Virtual and system mailboxes - how to set passdb propperly

I've just configured email on my server. Gentoo, Postfix, Dovecot, Amavisd, ClamAV and Spamassasin I am using LMTP for delivering virtual mails, works great. I am using standard postfix deliver ...
0
votes
2answers
140 views

Gmail as stand-by mail server for Exchange for incoming emails

How to configure MX zones to utilize Gmail/Outlook as stand-by incoming mail server with my active Exchane to provide reliability? Gmail/Outlook should only be used in case of Exchange is ...
1
vote
0answers
131 views

Postfix configuration with DKIM to send mail from multiple domains [duplicate]

My current setup is a Postfix installation configured with DKIM on a server with hostname prod01.example.com The server is used to send out mail on the form webshop@example.com, ...