The server configuration of email, including POP3, SMTP, IMAP, and popular server software packages that control email.

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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 ...
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0answers
9 views

Postfix configuration to forbid mail relay

I have read as many documents as I could understand about tuning postfix main.cf parameters, but still get some external email relayed. Here is a typical example in /var/log/mail.log: Mar 6 ...
4
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1answer
42 views

Configuring nagios notification settings to be very frequent

I've set up a Proxmox VE Cluster with three nodes. Each nodes has a number of VMs running on it. I'm using the PVE Monitor Plugin to set up the hosts and services, which works fine. My issue is that ...
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0answers
19 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 ...
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0answers
29 views

Server exploited, perl script sending spam [duplicate]

my server with centos 6 is sending massive spam. Before move the backup on the new clean server, I must understand what is going on. let's read some logs mail log Jan 10 14:21:00 vps63495 ...
3
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1answer
15 views

Exchange 2013: Weekly Message Count

I have a manager needing to check on an employees sent and received message count as the employee is stating they are getting too much mail compared to others in the company. I've been checking ...
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0answers
28 views

Rejected emails when sending from google apps to some domains (550 Unrouteable address/Sender verify failed)

i'm sending emails from my domain prokubo.com using google apps and i'm having returned emails at least when sendind to two different domains: Delivery to the following recipient failed permanently: ...
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0answers
11 views

exim closed by QUIT

I have server X that runs a php script that should connect to server's Y smtp port 465 and send mail. It works fine from server Z to Y, but not X to Y. Server Z and Y are regular cPanel. Server X is ...
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2answers
50 views

Is mail.example.com required?

In the light of migration to another mail provider I removed one DNS A record which looked like redundant. So I had: imap IN A 64.29.151.235 pop IN A 64.29.151.235 smtp IN A 64.29.151.235 mail ...
4
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2answers
43 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 ...
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0answers
8 views

Resources invitation policy in Kolab 3.4

When anybody reserves a resource, it's automatically accepted. I'd like it to be manually accepted by the owner of the resource, so I do: Create "fool" resource in kolab-webadmin with email ...
4
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1answer
65 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 ...
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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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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
11 views

Postfix: Different outgoing IPv6 for multiple domain setup

I am serving 3 domains on my linux VPS using Postfix MTA. I have 1 IPv4 and over 65k IPv6 adresses. Because you need correct reverse DNS to avoid the spam filters I want to force Postfix to use 3 ...
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0answers
21 views

Receiving empty mails from three different Windows PC's since 12th January 2015

Since 12th Jan 2015 I am getting strange empty mails to my inbox every day. I was not able to trace their source. Fact I've noticed so far: they are all from company where I do network/sys support ...
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1answer
20 views

Sendmail - How to relay / send emails ? (503 error: not authorized, use AUTH)

I have been following a how to for setting up sendmail using a smart host ssrs.reachmail.net, However I cant seem to successfully send a email from my server to my gmail account. I think I'm ...
1
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1answer
29 views

If I create a virtual email alias that forwards a lot of spam email, is my IP at risk of blacklisting or the originating IP address? [duplicate]

A scenario of this would be something like a domain called domain.com has a mailserver set up that forwards all email sent to info@domain.com to person@gmail.com. If someone sends a lot of spam to ...
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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?
3
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1answer
57 views

Why am I getting these emails?

Awhile ago I noticed that email messages from my domain is not immediately delivers by google, and I'm getting an smtp error message from google server. I don not remember the exact wording of that ...
0
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1answer
22 views

Redirect email for redirected domain [on hold]

I have two domain names with a registrar, one points to a server running plesk with a subscription setup to host the website. The second domain name simply redirects to the first using the registrars ...
0
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1answer
20 views

opendkim to sign all '*' users in a domain

How do you get opendkim to sign for all users in a domain? *@exmailer.com exmailmap in the signing table is not working for me. error: opendkim[1565]: 573D4A0D3D: no signing table match for ...
4
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1answer
42 views

Roundcube sends e-mails without subject

I have recently set up a mail server that consists of postfix and dovecot. Yesterday I added nginx and roundcube to the mix. SPF, DKIM, DMARC, rDNS records are all done. Gmail treats my mail as valid ...
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1answer
62 views

Generating public/private credentials for MS Outlook email encryption

An app running on a CentOS 7 web server needs to receive encrypted emails sent from users of MS Outlook. Can someone please provide explicit instructions as to how I can generate or procure all of ...
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1answer
35 views

CentOS email setup for Wordpress

I am moving an old Wordpress install to a new CentOS LEMP stack VPS. I want to set up email for the new VPS. It came with sendmail installed by default but I find it to be overkill. I just need a ...
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0answers
9 views

Re-routing packets back inside the network on a SonicWall firewall

I have two wireless networks, one guest network which uses a 10.0.0.0 network to assign IP address to guests and one internal one who gets the IP address from the internal DHCP (let's say ...
1
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1answer
21 views

How to route select e-mails from Office 365 to another SMTP Server

I have set up an SAP system to act as an SMTP server on port 25000. The company uses Office 365 as its email provider. Is it possible to route/forward e-mails that are delivered to a specific e-mail ...
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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 ...
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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
76 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
20 views

How to flag email rated with negative Spam score as actual Spam?

I'm being inundated with spam email, seemingly overnight. 200+ messages a day, easily. After looking at the headers, the majority of the messages have spam score numbers in the negative range. ...
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1answer
39 views

Individual accounts being spammed on server, even though DNS not hosted [closed]

Disclaimer: Please pardon the newbery! I've got a dedicated linux server from HostGator that has around 100 accounts on it. Lately, dozens of these accounts get bombarded with junk mail a few times a ...
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1answer
7 views

Exchange mail flow rules for signatures

I've recently implemented an html signature using transport rules in exchange 2013, that appends given signature as a disclaimer to all emails from a given sender domain. The problem is that the ...
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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
36 views

Postfix - relay locally generated mail but accept mail incoming from GApps for the same domain

I know the way to disable all local delivery is to remove the domain from "mydestination", which will cause all mail to be relayed through whatever relay I setup. But I want postfix to accept all mail ...
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0answers
18 views

Unable to hide sent email headers using postfix [closed]

The guide I followed is here: https://major.io/2013/04/14/remove-sensitive-information-from-email-headers-with-postfix/ No matter what I do I cannot manage to hide specific headers, most importantly ...
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0answers
11 views

Save emails to eml files on Exim server

I want to store emails received to an Exim mail server as .eml files. Is that possible? The goal of this is to allow users to download received emails from a web page.
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0answers
17 views

Mail services disabled but server still sends spam [duplicate]

A domain on my host was sending spam e-mails. It was an outdated joomla version and there were everywhere in their web directories php bot spam scripts. From my side I disabled the php's mail() ...
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2answers
37 views

I am able to receive mails but unable to send via my SMTP server?

I have a shared hosting server from hostgator, in which I created an email 'support@mydomain.com'. Then I enabled both DKIM and SPF (as I read on a few threads that SPF should be enabled to ensure a ...
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
37 views

Can't login via IMAP after creating user via useradd command

I'm trying to create a new user (that can access email) with useradd. My command is useradd --shell /bin/bash --create-home --password <password> <username> However, I cannot login to ...
-2
votes
1answer
39 views

Postfix POP3 NOQUEUE: reject: RCPT error

I am getting an NOQUEUE: reject: RCPT error when trying to send mail via POP3 and Postfix (note: IMAP works fine). Feb 21 06:57:04 r2d2 dovecot: pop3(br@telecomm.com): Disconnected: Logged out ...
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2answers
66 views

Can't connect with telnet from external ip

I have a postfix server running on a kimsufi VPS, i installed roundcube on it, and everything is ok. The problem is, when i try to connect from another server, i have a timeout : telnet whys.fr 25 ...
5
votes
1answer
95 views

Postfix stops picking up mails at night

Our postfix system stops sending mails at night. Every night at 2am it stops picking up mails. The server is a monitoring server, which sends a lot of mails per day. /bin/mail drops the mails in the ...
1
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1answer
26 views

Postfix using virtual.db file instead of mysql table

I have specified virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf, but still I got errors like warning: hash:/etc/postfix/virtual is unavailable. open database ...
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1answer
39 views

How can I configure a Haraka mail server to forward mails to another address on another domain?

I'd like to setup an Haraka mail server on a domain (let's say 'example.com') that will only act as a forwarding service to a 'gmail.com' email address. For the sake of the example let's say I'd like ...
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0answers
11 views

When using an “Internal Relay Domain” as an Accepted Domain, what email addresses must be synched?

There are a number of SMTP addresses associated with a user in Exchange SMTP, X500, X400, etc. In addition there is a LegacyDN. Some of these email addresses are stored in the NK2 files and also in ...
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 ...
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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: ...