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

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1answer
163 views

How to remove Received: (from apache@localhost) and sendmail version from headers

How can I remove Received headers from message? I want to hide apache user name, and sendmail version. Message (send from PHP script): Delivered-To: peter@mydomain.co.uk Received: by 10.182.138.73 ...
2
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1answer
382 views

0x80090345 error from Windows 10 mail when attempting Exchange 2003 access

Up until now we have only had windows 7 pro clients connecting to our 2003 exchange server using Outlook 2010 email and public folder access with no problems. Today I have been attempting to get a ...
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1answer
46 views

Postfix virtual mailbox - mail rejected if 'myhostname' is not 'localhost'

I'm using this howto to setup virtual mailboxes for non-linux accounts using postfix. This part of my main.cnf: myhostname = localhost mydomain = aviacao.pt myorigin = aviacao.pt mynetworks = ...
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1answer
52 views

emails to root - CentOS and Postfix permssion error on maildir file

I'm trying to setup a new mail relay server to send email out from internal servers only over TLS. I've followed this guide http://www.krizna.com/centos/setup-mail-server-centos-7/ to Step 10. I only ...
2
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1answer
47 views

DKIM - Single host - Multiple IPs

Trying to figure out the best practice for implementing DKIM on a single EC2 which will have multiple, elastic IPS. # /etc/opendkim.conf ... Mode sv Canonicalization ...
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3answers
273 views

SPF and DKIM help: Do the FAIL reports from DMARC indicate an issue?

I am having trouble determining if my SPF and DKIM are configured properly. Here are key details: My domain is mysteryscience.com We send mail from google apps, from SendGrid, and from Intercom. All ...
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1answer
40 views

Ubuntu 14, Postfix, Dovecat, Squirrle, Email messages not being sent to outside domains recipients

I have been suffering for so long from this.. All emails sent from the server are being delivered to local addresses.. but nothing to remote addresses!! All emails are being received by local ...
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3answers
105 views

Delivery is delayed errors, seems specific to Office 365 recipients

Our site runs SBS 2011, with Exchange 2010. We have recently changed ISP and made the necessary changes to Exchange connectors, static IP, reverse DNS and MX (phew). All inbound and outbound mail ...
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0answers
27 views

Setting up Ubuntu 14 server to send log emails from router

I am setting up a small ubuntu 14 server sitting behind a router mostly for providing services on the local network. I want to set up sending logwatch and other log-type emails from the server to my ...
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0answers
49 views

I am looking for software that can parse emails and expect emails within a grace period [closed]

I manage a diverse set of backup systems, the only commonality is email notifications, There status being Failed, Success, Success with exceptions and unknown(where the email isn't sent). Case 1) ...
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2answers
79 views

what is the correct solution for an offsite mail relay?

I have an onsite Exchange server. For the rare cases in which our onsite Internet connection goes down, I want to setup an offsite inbound email relay server (I believe this is the correct ...
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2answers
211 views

Spamhaus XBL keeps adding my IP

Several days ago I found a message which was rejected in my inbox. It said that my IP is listed on Spamhaus XBL. Their page states: The reasons could be an Open Proxy or Spambot/Trojans. Checked all ...
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1answer
116 views

Can't connect to mail server anymore

I never touched anything on the server which belongs to postfix and dovecot. But for several days I can't connect to my mailbox anymore. /var/log/mail.log while connecting: Sep 19 15:58:11 ...
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1answer
70 views

Sonicwall Block all internet traffic but email

I set up a sonicwall to block internet to users on a certain switch port. Works well, but now they want to access email, while still blocking the internet. I can't figure out a way to do this using ...
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8 views

Citrix Xenserver Service Account Issues

I'm trying to create an account with citrix xenserver so I can post questions on their boards and also get notifications for updates. I filled out the necessary info and I get an email saying an ...
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3answers
103 views

Wildcard CNAME, normal MX record: Risk of unintended mail routing or hijack?

Our domain has the following DNS records: *.example.com IN CNAME foo.org example.com IN A x.x.x.x example.com IN TXT "v=spf1 mx -all" example.com IN ...
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1answer
38 views

Not able to send mails from my server, able to receive mails

I am not able to send mails from my server; however, I am able to receive mails. I am using Postfix. When I telnet to port 25, I get this output: telnet server.example.in 25 Trying 52.xx.xxx.21... ...
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0answers
28 views

Retention for Attachments - - - Microsoft Exchange 2010

Currently I am working with getting rid of voicemail to email files to save space in our archiving solution. Currently I have a search-mailbox script written to take care of deleting the voicemail ...
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0answers
35 views

Issues with NAUbackup Email Notification

I've setup NAUbackup to carry out backups for my xenserver 6.5 VM's. It backups up fine but I can't get the email notification to work. I've uncommented everything in the VmBackup.py script, added my ...
2
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2answers
62 views

Allowing multiple users to decrypt pgp emails for one email-address

me and my business partner each have our own company email address for which we use PGP. This allows us to communicate safely with our customers. However in order to communicate securely, the sender ...
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1answer
36 views

Setting up an additional domain exch 2007

I need to setup an additional domain for my company and have never done this before. From the exchange server exams I know, (create accepted domains etc) but currently the domain is with a third ...
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1answer
82 views

Why do I receive this email 3 days late?

Somebody (SomebodyThere@icbm.de) sent me an email on 8th Sept and I received it only on 11th Sept. Can anyone shed some light why? These are the headers: From - Fri Sep 11 11:27:52 2015 ...
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0answers
38 views

Web users can access website on mail.example.com [duplicate]

I have a single VPS server with single IP running Nginx server 1.80 web server, MySQL, mail server and bind via ISPconfig with multiple websites, all have SSL enabled. hostname: server1.example.com I ...
19
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1answer
1k views

Can you have an email address with only the top level domain as the domain part?

The question title pretty much contains the question by itself, but as an example: Instead of having an address like bob@example.com(where example is the sub-domain of the TLD com) could you have ...
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1answer
170 views

S450 4.7.1 Client host rejected: cannot find your reverse hostname

I have and old Nagios server on CentOS 5.11 and want to migrate to a newer CentOS 7 machine. I copied the config, but the e-mail sending isn't working, got the following error: Sep 11 15:23:38 mon ...
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2answers
98 views

top output to narrow in cron

I'm trying to send an email through cron to know what processes are hogging my server. It works fine but the resulting email is too narrow and I need to know more about the process. This is the ...
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0answers
24 views

Giving multiple users access to a shared mailbox in Exchange 2010 not working like I want it to

So If I make a shared mailbox, right-click on it, and 'Manage Full-Access Permissions'. I click 'Add', and procede to search and add a user. I do this two or three more times with different users I ...
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2answers
178 views

Client can't connect to mail server with SMTP (postfix)

I have a mail server with postfix and dovecot. The mail server is on a VPS. At the moment, I can send/receive mails from the server itself. It seems to work OK. However, I'd like to use my mail ...
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1answer
52 views

Configure postfix for outgoing mail

I rent a VPS, a domain name (let's say foo.bar). I want to send an email using the address user@foo.bar. I have installed postfix, and started configured the main.cf file; however it doesn't work. It ...
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1answer
126 views

How do you save a local copy of mail when forwarding mail with Postfix?

This question has a related answer here: How can I forward mail while saving a copy using postfix and mysql? But there are two problems with it: the OP's setup uses MySQL and all answers are geared ...
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1answer
81 views

Why does Google Apps Mail leak IP address? How do I disable it? [closed]

When sending via Google Apps Mail client the message will include a 'X-Originating-IP' header. But when sending via Gmail and using the SMTP send-mail-as option it will not leak the ip address. (Yes ...
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1answer
56 views

Email redirected to Gmail contains failed SPF

I have an email account on my domain, e.g adrian@mysite.com And on my dedicated server mysite.com I redirect messages from adrian@mysite.com to adrian@gmail.com Now, if an external user like ...
3
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1answer
2k views

IP address is not allowed to send mail from DOMAIN

Today I heard that a customer can't send email to us. He received the following error: < #5.5.0 smtp;550 [ipaddress] is not allowed to send mail from [domain name]. Please see ...
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1answer
95 views

Postfix on Ubuntu not delivering mail to a few addresses

On my ubuntu server my WordPress installation sends email the normal way using wp_mail (which in turn uses php mail()..). The server is set up with Postfix for delivery. Recently there's been a ...
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2answers
30 views

Create multiple email-server names

My email server has two domains and the email hostname for each of them is mail.domain1.com. I'm attempting to remove the 'mail' in mail.domain1.com for domain 1 and set domain 2 to domain2.com. So ...
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2answers
620 views

Helo command rejected: Host not found - Setup postfix to accept sending mails from my home server through my public server

I would like to receive system emails from my home server. So I'm trying to configure postfix to do that through my public server. My public server has a fixed IP, while my home server is in a private ...
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0answers
33 views

Two ips rotating each time an email is sent - iptables

I have two ips attempting to rotate each time an email is sent from server. The following commands say they are configured: sudo ifup venet0:0 ifup: interface venet0:0 already configured sudo ifup ...
3
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1answer
72 views

Dynamically limit postfix attachment size

For a project I am currently working on, we received a requirement for a 'dynamic' mail attachment size limit. For postfix (which we currently use) this would be easily implemented using the ...
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0answers
71 views

Exchange server: Why do a couple users have random numbers at the end of their “Windows domain\user name” and is this causing problems?

Background on the problem: I work for a company which is a Panasonic Partner. As a part of this program, Panasonic regularly sends out "Partner Alerts" to everyone who is signed up to receive them. We ...
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2answers
90 views

2 email server and one static ip

I need to manage two mailservers (postfix and dovecot on different machines) using a single public IP. I thought I solved by putting non-standard ports on the second postfix instance, but I do not ...
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1answer
19 views

pyzor in Debian Testing

It seems that the recent debian testing packages of Pyzor [1:0.5.0-3] has changed the content. Python scripts for pyzor are no longer included. https://packages.debian.org/stretch/all/pyzor/filelist ...
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0answers
58 views

Configuring exchange receive connector to receive from mdaemon acting like a security mail gateway

I have the following lab. Mdaemon on 192.168.47.10, Exchange 2010 on 192.168.47.14 and a pfSense sending incoming mails to mdaemon on port 25. My domain name is example.co.cu and i need to forward all ...
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0answers
39 views

Postfix: on multi-recipient e-mails of same domain, how do you remove all but one (first) address?

We have a shared IMAP mailbox for a business. Customers are not used to not having to CC tons of people with us, so they CC everybody, which creates noisy duplicates in our shared inbox. How can I ...
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1answer
199 views

PowerMTA Not starting

I have recently installed PowerMTA server on CentOS 6, every prerequisite was installed according to Document and License was entered in correctly configuration file was also correctly setup in ...
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1answer
225 views

DNS Setting for POP3 and SMTP email [closed]

I'm new to server configuration, I have used rented webservers a lot, but I tried venturing myself with a VPS to run my own web/email server. All is good, I installed VestaCP to help me with dealing ...
2
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1answer
81 views

Dovecot SSL: “unknown state”

Two weeks ago I set up a Mailserver using Dovecot and Postfix. It's a server for a organization with about 5000 mails per day. Everything works fine, but today I enabled verbose_ssl in ...
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1answer
312 views

Exchange 2010 Tracking Log Explorer only showing internal email

I have 2 Exchange 2010 servers. I was looking for a receive time of a certain email so I opened Tracking Log Explorer and added the appropriate Date & Time filters. All I see are internal emails ...
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0answers
5 views

Exchange 2010 Tracking Log Explorer only showing internal email

I have 2 Exchange 2010 servers. I was looking for a receive time of a certain email so I opened Tracking Log Explorer and added the appropriate Date & Time filters. All I see are internal emails ...
0
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1answer
64 views

Can Gmail's “Send message as” feature work in Outlook without using Google Apps Sync for Outlook?

I'm trying to migrate a client from an on-site Exchange 2010 server to Google Apps. Every email address has multiple aliases, and each user needs to be able to send mail from each alias. To complicate ...
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1answer
76 views

emails from iDRAC6 express are failing

I have Dell R710 servers with iDRAC6 express. There is no dedicated NIC for the drac, so in the NIC selection it is set to shared. The IP, subnet, DNS and gateway are all good and the domain name is ...