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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4 views

Starting qmail-toaster: svscansvscan: warning: unable to read directory: access denied

I got such message when trying to start qmail-toaster: Starting qmail-toaster: svscansvscan: warning: unable to read directory: access denied All permissions are correct. drwxr-sr-x. 2 alias ...
-1
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1answer
15 views

Emails from my domain getting blocked at all other domains

Recently I tried to set up a new email server using iRedMail on Lubuntu. The mail server workes very well when email conversation is in the same domain. But when a user tries to send email to some ...
0
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0answers
20 views

Manage multiple email accounts online [on hold]

I am trying to find a way to manage multiple email accounts from various domains/servers into a single interface/dashboard. To be precise I have 10 websites on 1st server, 5 websites on 2nd server, 1 ...
4
votes
2answers
49 views

Parse undelivered mail headers (bounced mail)

What is the best way to parse the headers of bounced (undeliverable) email that is sent back to my server and determine whether it is a soft or hard bounce? I only send opt-in emails to my users, but ...
0
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2answers
80 views

email sending speed - how to improve

I am maintaining a server to send email mailings (no spam, of course). The current speed of this machine is approx. 2000 emails per hour. (edit: actually I did a test mailing today, removing the ...
4
votes
1answer
67 views

how do I set up two smtp ports for postfix?

A CentOS 7 server with postfix, dovecot, and mailx needs to accommodate mail being sent through port 465 and received through port 25. What specific syntax and files need to be changed in order to ...
0
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1answer
20 views

How does the DKIM from SendGrid prevent me from spoofing my email adress?

I'm making use of SendGrid to send automatic emails. First I went to the whole hassle of creating a DKIM record, before I recently discovered the whole record doesn't seem to be checked anyway, ...
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1answer
42 views

Understanding Postfix Mail Log

Recently I checked my mail log and found a lot of messages like this (some cipher text have been truncated): Feb 23 11:57:42 postfix/smtpd[32451]: initializing the server-side TLS engine Feb 23 ...
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0answers
21 views

Unable to sync Outlook 2010 with Exchange? Mailboxes too large? [migrated]

We retain a single document ingestion inbox for incoming files from our clients, the size of which is ~30 GB. Several users are monitoring it via a shared folder in Outlook 2010. After reformatting ...
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0answers
31 views

spfpolicy permission denied error

Who should have spfpolicy file's permission? . I'm guessing is that matter since i have this error Mar 2 15:57:51 example postfix/smtpd[28162]: input attribute name: /usr/bin/python: can't open ...
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0answers
10 views

How to host email server From Windows server 2012 [on hold]

Hello I want to add unlimited email id with my domain.com and This to be done from my home server which is running on windows server 2012 Is it Possible to run email server from home or give some ...
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0answers
11 views

Spam in server using EM Client

In em client, I added a rule that will delete the spam permanently. Now, my question is, will it still be listed in our server or the spam message will not be included in the list?
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0answers
15 views

Remove emails from server - Zimbra

I have a Zimbra 6 emailing server. The space on the server is almost full. I deleted all the emails from my account, but unfortunately, the mailing server didn't release any bit. From what I ...
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0answers
26 views

Applying filter on mail from specific subnet in postfix

I'm trying to get the following to work: We have a postfix relay on the edge of our network, accepting all mail from our internal LAN & DMZ. What we are trying to get to work is limiting the ...
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0answers
20 views

Online mail server settings checking service [closed]

I want check my mail server for many settings (MX, PTR, A, dkim, spf, OpenRelay, valid HELO, RBL status and more and more..) i recieve mail to checkme@check_my_server.tld and get reply with detail ...
0
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1answer
27 views

What should be the reverse DNS for the email server?

When I nslookup x.x.x.x my web server's IP address I get this error: Non-existent domain. Must it return the top domain like mydomain.com or it is okay to return ...
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0answers
12 views

Blacklist mail server [duplicate]

I have checked my IP in all spam lookup sites. those sites are DNSBL.info, spamhaus.org, barracudacentral.org, spamcop.net, blacklistalert.org and all of it says that I am clear. But when I checked it ...
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2answers
79 views

Remove blacklist from spamRATS

I have checked my IP in SpamRATS and the result is the following: Standards Compliance: Does IP Address resolve to a reverse hostname... Passed! Does IP Address comply with reverse hostname ...
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0answers
7 views

Google Apps for business ALL bcc

I did not get an answer from Google Apps team. Hence asking here. Like in Postfix we have an All BCC email option where every email sent and received of a domain will be BCCd to an email id, can we ...
1
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1answer
28 views

Two servers in domain but only one responsible for sending emails

I have two Debian servers: web.example.com - LAMP web server mail.example.com - mail server with postfix, dovecot and mysql based user directories, auth required Now I want to setup web.example.com ...
-2
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0answers
19 views

Postfix reject to deliver email through SMTP to any domain

My postfix server denied to send email to any domain except local one. Here is test result using telnet. telnet mail.emailhost.com 25 Trying 128.199.XXX.XXX... Connected to mail.emailhost. ...
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0answers
12 views

My server mailing use server email adress instead of my domaine email adress

Well I hope i will be enough clear so i have a mailing system on my server that I use for sending newsletters Last time i worked on my domain email authentification (SPIF - DKIM - SpamAssasin - ...
2
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2answers
40 views

PHP emails, Postfix and Message Queue

I've been running a web platform that needs to send a considerable amount of emails daily. At the implementation date I and my partner decided to setup Postfix on the server and use Swift Mailer class ...
0
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1answer
20 views

What happens to local email when user does not exist

I'm running a server with postfix to handle email sent from a php website. Email for the domain is handled by another server, however due to the fact that this domain name has been entered in ...
-3
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0answers
17 views

452 Too many recipients received this hour. Connections from this sending hostname Unknown [duplicate]

I'm getting below error, when I'm trying to send email to multiple recipient or trying to send more than 2-3 emails. 452 Too many recipients received this hour. Connections from this sending hostname ...
0
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2answers
42 views

mx server: multiple domains on one ip

I'm just a bit confused about the correct DNS setup for hosting multiple domains on a single server with one ip. For example the mail server (domain/reverse: example.com) should host 3 domains: ...
1
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1answer
37 views

Is Dovecot required for mail server like Exim or Postfix?

I am really confused about this, because I thought Exim and Postfix can authenticate user logins and nothing is required. Reading the page at ...
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2answers
31 views

How to limit external access to mail server?

I use Mdaemon mail server. It can be accessed from internal network and from internet (using mail client and web interface). The problem is I need to limit which users can access their mails from ...
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votes
0answers
50 views

Roundcube Connection to storage server failed

I am setting up a web mail server on my droplet with digital ocean. I have followed these tutorials: ...
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0answers
38 views

postfix outbound emails getting deferred

All outbound emails to yahoo and gmail exit the server but never get delivered. All emails get 'deferred'. I can see yahoo and gmail hitting my database via query logging in MySQL -> ...
1
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1answer
69 views

com.sun.mail.iap.protocolexception no login methods supported

A JavaMail app and dovecot/postfix/mutt are running on the same CentOS 7 physical serverbox. This JavaMail app was able to reliably import emails via IMAP using the same exact code until some changes ...
2
votes
1answer
80 views

NOQUEUE: reject: RCPT from on freebsd and postfix

I am building a server using this config -> http://www.purplehat.org/?page_id=4 and when trying to test basic email capabilities I get -> NOQUEUE: reject: RCPT from when try to send a test email. ...
0
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2answers
73 views

Email server attack from telnet

My mail server having a problem on blocking some attacker that trying to telnet to our mailserver. but i'm not able to block it, ip will keep changing even we block by ip. seems like he is trying to ...
1
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1answer
37 views

Change of MX records priority seems not to entirely working

I am in the middle of a Cutover Migration from Exchange 2010 to Exchange online. Accidentally for about half a day, i have changed the priority for the Exchange Online MX record to be the lowest ...
-2
votes
1answer
41 views

set up mail server (APACHE virtual host) [closed]

I am trying to configure my own mail server. I only have one server. My domain name is example.net. I've created a sub-domain (a virtual host an apache2): mail.example.net. my hostname is: server01 ...
0
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1answer
26 views

Email Virus initiating a DOS Attack [duplicate]

I have a VPS that keeps getting shut down because of excessive inbound or outbound traffic. I thought I had a virus on my server and with it shut down so was my email server. So I got a new VPS ...
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votes
2answers
46 views

Postfix - How to prevent external clients from using my server as a relay? [closed]

I have a postfix server installed on Ubuntu 14.04. A PHP script running on the machine uses it to send outgoing email. Additionally, I use postfix to receive mail sent to a local account, which is ...
0
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1answer
54 views

DKIM signing key

when I create DKIM key like this: sudo opendkim-genkey -s mail -d example.com -s specifies the selector and -d the domain, this command will create two files, mail.private is our private key ...
4
votes
1answer
215 views

Sendmail is not listening to any port

I am using VPS hosting with CentOS 6. I've installed Sendmail, but it's not listening to any port. I've checked, IPTables is disabled (or stopped I guess; service iptables status command returns ...
2
votes
1answer
85 views

make Postfix to bcc mail twice

I am running a Postfix mail-server, to scan mails I forward them to amavis, after the scanning amavis forward the mail to ciphermail (a program that automatically de- and encrypts emails). Ciphermail ...
1
vote
1answer
70 views

Postfix mail sent to SPAM in Yahoo and Outlook (SPF, DKIM, DMARC also configured)

I have implemented DMARC in out email server and got the response from some of the email domains as follows, <?xml version="1.0"?> <feedback> <report_metadata> ...
0
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0answers
44 views

Mailserver stop receiving email dovecot log is missing suddenly

i have problem with my mailserver. in some randomly time my email in roundcube cannot receive email and i check in the log file /var/log/maillog Feb 1 10:00:51 ns1 postfix/pipe[20605]: 37CA81848A7: ...
3
votes
0answers
32 views

How to synchronize downloaded emails from clients back to the IMAP server [duplicate]

I have an iRedMail server running (postfix + dovecot as an IMAP server) on a Debian Xen guest machine. By a mistake the iscsi disk, where users emails are stored, was deleted. There is another copy of ...
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votes
0answers
42 views

Postfix SMTP mail is sent to SPAM

I have installed postfix mail server in ubuntu machine. I configured the mail server as well as DNS properly. Mails are sent from our mail server properly, but all the mails are listed in the spam ...
0
votes
1answer
74 views

Can't receive emails to my mail server

I created a mail server, following this tutorial: https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql , I configured the email on my email client, SMTP and IMAP and both ...
0
votes
1answer
52 views

Incorrect FQDN on Exim4 send-only SMTP mail server

I am pretty new to Linux systems and I am trying to send e-mail to my gmail ID using exim4. I found many tutorials for exim4 online and I am doing exactly that, however I never receive any email. The ...
51
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6answers
4k views

Why can't MX records point to an IP address?

I understand you should not point a MX record at an IP address directly, but should instead point it to an A record, which, in turns, points to the IP address of your mail server. But, in principle, ...
2
votes
2answers
70 views

invoke filtering manually in dovecot+sieve

I've configured dovecot with a sieve filtering (also I've configured roundcube, but this does not matter I think). It's working fine, I've set up some filters. But now I've got a huge unfiltered ...
0
votes
1answer
43 views

SPF Softfail when Txt Record Exists

I am getting softfail for SPF and Sender-ID and I tested it by sending an email to check-auth@verifier.port25.com. My Set-up: 1 VPS hosting 1 website Postfix for Send only emails No incoming ...
-3
votes
2answers
37 views

Exchange server accepts email without authentication. Is this a misconfiguration?

I am a user on a network with an exchange server and there is an HP scanner/email machine that can send emails with scanned docs as an attachment from any email address without authentication so I ...