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

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1answer
45 views

Email bounce notification for an email account that doesn’t exist in exim mail server

Need help with Exim mail server setting. I want to set the exim mail server to trigger an email bounce notification for an email account that doesn’t exist. For example: abc@abc.com - should bounce ...
0
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1answer
21 views

Uniquely identify DiskStation in email report

I'm administering multiple DiskStations, each of which sends out all its status reports to me. Unfortunately, in the default configuration all of these emails look the same and I often have a hard ...
1
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2answers
209 views

How to whitelist an ip range blacklisted by Spamcop

Our testing team uses email addresses from a domain which is different from the actual site domain. For example, our site is www.abc.com and email addresses are belongs to user_x@xyz.com. www.abc.com ...
0
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2answers
66 views

Can Mandrill route inbound email to webmail (like roundcube)

My main issue is I setup a small server, and my ISP blocks port 25. I've setup Mandrill as a relayhost on port 587 in postfix, so that solves my sending issue. I know Mandrill can be used to route ...
2
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1answer
42 views

SPF “include:” does MX stay as included domain's MX, or get translated to the includer's MX?

SPF records allow you to include another's domains SPF record within your own. For example, example.com can have include:_spf.google.com in its SPF record to include all of the SPF rules for ...
3
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2answers
162 views

Receiving DMARC reports for emails I do not send

I am hosting the email for my domain (lets call it example.com) on google apps (free legacy edition). I recently enabled the DMARC reports so I now get a daily report for the emails sent from my ...
0
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1answer
54 views

SPF check failed

I am having trouble with failing to deliver mails with my setup. Server 1 - example.com + Direct Admin IP: 111.111.111.111, default domain (provided by hosting company: vps11111.company.com Server 2 ...
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2answers
65 views

How to route mail server from both internet and intranet? [duplicate]

We have a mail server configured in Ubuntu 12.04 with postfix, dovecot and roundcube. It has two interfaces, one with real IP and one with private LAN IP. Incase of intranet we have branches and head ...
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2answers
88 views

Setup scalable email server [closed]

I spent last week setting up email servers with trying all MTA and I was able to send and receive emails with attachments and do spam filtering. Now my concern is what if I got too many users and too ...
0
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1answer
27 views

Adding signatures to emails via transport rule in exchange management console

I am trying to setup a transport rule in exchange management console which creates a signature at the end of a users emails. This seems to work. The problem however, is that the signature gets added ...
3
votes
1answer
121 views

Exchange not checking SPF record for own domain

I have an interesting issue with Exchange where it appears to check and stamp spoofed messages from external domains but not ones it has setup to send from. For example I can spoof a message from ...
0
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1answer
32 views

Exchange Shared Mailbox with Forward Rule Removes Recipient when they are the Sender

We have a shared mailbox on Exchange 2010. This shared mailbox has a forwarding rule that will send any email received to a list of individuals. There is one person who will send an email to the ...
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3answers
38 views

DKIM: Can I simply change the RSA key used in DKIM without changing the DKIM selector?

Can I simply change the RSA key used in DKIM (DNS TXT Record) without changing the DKIM selector or will this result in any issues? If not, what's them the purpose of the DKIM selector? BTW: 20120113 ...
2
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1answer
121 views

DKIM: Can I use a RSA key larger than 2048bit, i.e. 4096?

I wonder if I can simply use a 4096bit RSA key for DKIM (in DNS TXT Record). Are there any downsides (neglecting computational effort)? Maybe there are mail servers which can't handle a key this ...
0
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1answer
24 views

Exchange from field in iso format when ø character in name

I have setup a forward connector on Exchange (2010 SP2) named (f.e.) target.domain.no. The forward record points to a Windows Server SMTP Server (EMSERVER). Now I see in that emails that have the ø ...
3
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3answers
198 views

Postfix sends to FQDN Hostname instead of Domain Name

I have installed a send only postfix. Postfix works when I send a mail to a full email address. However, if a mail to sent to a user, it adds the FQDN name as the extension instead of just the domain ...
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1answer
42 views

Postfix - MySQL - noreply custom response not working

I'm trying to get a custom response working for no.reply@example.com and I keep getting "User doesn't exist" errors. I have an alias of no.reply@example.com which has a 'goto' of the same value, then ...
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2answers
162 views

Can send email but can not receive email on Windows Server 2012 R2 with MailEnable

I am configuring a VPS on Windows Server 2012 R2 using MailEnable as email server. As the port 25 is blocked by ISP so I use port 587 instead. When configuring on email client Outlook or ...
0
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1answer
43 views

Setting up a simple email forwarder on EC2 [closed]

I'm migrating my personal website to be hosted on EC2. I've got the website part of it up and running, but I'm stuck getting the email server setup. All I'm trying to do is receive a small volume of ...
0
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0answers
33 views

Incoming SMTP to Azure Windows VM going to C:\inetpub\mailroot\Queue\ instead of Drop\

I have an ASP.NET web app that needs to process incoming SMTP email from any Internet user. I configured IIS and my Azure Windows server 2012 R2 VM end point, but when I send email from the Internet, ...
0
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0answers
23 views

Emails ending up in gmail spam folder [duplicate]

Emails from my dedicated server are ending up in spam folder in gmail even though the server is not blacklisted and with good reputation - see below. the server level issues that would cause this ...
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2answers
92 views

Postfix - Is submission (587) enough?

I have a working postfix/dovecot solution in place and am ready to update DNS to adjust MX priority away from google MX servers to our server. But I got to thinking, do I NEED to configure postfix to ...
0
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1answer
21 views

On a default Linode instance, can I check email remotely?

Please allow me to ask a stupid question but I have a Linode instance that I use for web hosting. I use Google apps for email so I didn't install anything other than what came with my Ubuntu install ...
1
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1answer
31 views

Postfix: reject mail, but still deliver or archive in a folder for spam analysis

I'm using Postfix and Spamassassin, and Postfix is rejecting incoming mail that fall into spam rules. Mail are then forwarded to different relays based on many factors. Is there a way to archive ...
0
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1answer
33 views

Mail Clients stopped working after MX Change

At first I was using 'example.com' as my MX record and everything worked fine, IMAP, SMTP, sending mails from the mail clients. And then I changed my mx record to 'mail.example.com' and everything ...
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1answer
45 views

how to stop incoming SMTP .EML attack on an Azure Windows VM

This morning 1:53am, my Azure VM began receiving unexpected .EML files in C:\inetpub\mailroot\Queue. By about 6am when I first logged on, it had received over 36000 files. As a workaround, I stopped ...
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0answers
164 views

Postfix capture messages exceeding limit

Is it possible to capture/filter messages that are exceeding the limit that has been set in the postfix configuration, and forward the captured mails to an external id? thanks in advance. EDIT : We ...
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1answer
64 views

Postfix - Host or domain not found

I installed postfix on my centos. this is postconf -n output: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix ...
2
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0answers
27 views

Does sending mail on behalf of another domain (using a Sender: header) increase chances of being marked as spam?

Our marketing department is contracting with a service that will send email to prospective customers on our behalf. From what I'm gathering from their documentation, it sounds like they do so via the ...
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1answer
526 views

IP used in the HELO request [closed]

I'm currently working on setting up my new VPS in a way so my emails dont get into the spam folders (ie Gmail, Hotmail etc). For all this to happen, all the DNS/SMTP configurations need to be setup ...
3
votes
1answer
241 views

Should local network host names and IPs be stripped from mail headers?

I'm completely confused about question of necessity/benefit of stripping local network host names and IPs from from mail headers. Two years ago I've found an article which states that modern ESPs ...
0
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2answers
74 views

How reliable is validating email domain by reverse DNS MX record checking [duplicate]

This question is not about how to protect against spam or validate a particular email user. But how reliable is validating emails domain (does it exists at all) by reverse dns. What are the pitfalls ...
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2answers
116 views

Emails going to spam - Gmail / Hotmail / Outlook? [duplicate]

Right, sorry if I come across a frustrated but I'm actually raged that I haven't got this sorted yet. We moved to a dedicated server 2 months ago, from a shared server (which had no issues with ...
0
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2answers
33 views

Is it possible to recover emails sent from SMTP?

So basically I have a contact form on my site. I just realized that the contact form didn't forward responses to my email because I didn't have sendmail installed. Is there any way for me to recover ...
0
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0answers
67 views

Manual autodiscover implementation failing. Why?

I am managing a mail server, and would like to have my Outlook users be able to automatically set up their mail server information. Normally this is done with an autodiscover file. Here's how I ...
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1answer
43 views

Spam from my email address on my domain with DKIM

Someone is sending spam emails from my email address. And it looks like these emails have DKIM. How is this can be possible if they doesn't have access to that email? (my emails handles by something ...
0
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1answer
160 views

Outgoing mail fails to be received by Gmail. Rejected because PTR record does not mach forward lookup

My mail server has been sending mail with no rejections from gmail until recently. No changes have been made that I am aware of. Recently my outgoing messages are failing with an error about a ...
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0answers
19 views

Email delivery status

I am trying to track an email. I use mutt so that I can edit the email headers directly before sending, and I added: X-Confirm-Reading-To: me@email Disposition-Notification-To: me@email ...
0
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1answer
62 views

PHP mail with domain in body

Running the following code snippet does not work. The email is never received. Note that I am using dummy values for email and domain. $to = "email@domain.com"; $subject = 'Mail Test'; $headers = ...
0
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2answers
49 views

How do IPs end up on the spam blacklists

I don't know if this is the right place to ask this kind of question but here goes. I have 3 IPs on my server, which I'm running for shared hosting. The main shared IP gets blacklisted sometimes, ...
1
vote
2answers
32 views

Using POP3 and IMAP for same account

When using a mailserver I know that IMAP leaves all the mail in the server while pop3 downloads it and deletes it (sometimes after a few days, depending on the mail client configuration options). My ...
0
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0answers
20 views

Postfix sending limitation

I am a complete newbie in server-administration, but with this new work I am actually the system admin. So, first of all, I am kinda sorry for my poor property of language - but I am actually a web ...
0
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2answers
109 views

Google Cloud Server Email Forwarding

I have a google cloud server with Cloud DNS working for my domain and IIS hosted website. I need email for my domain to be forwarded, i.e. for john@myCloudServerDomain.com yo go to my existing ...
0
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1answer
30 views

Should we rename the host name part of the email files when migrating to another email server?

The original email file name pattern looks like this: 1447902202.31829.old-domain.com,S=15459960_2,S If we are going to migrate to another email server, should we rename the host name part of the ...
0
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1answer
35 views

How to prevent spammers sending bogus@mydomain emails out of my name [duplicate]

Lately I receive a lot of Delivery Status Notification (Failure) e-mails. Bogus spam email is sent from blablaxx@mydomain to other emailadresses, and bounce back to my catch-all info@mydomain with ...
0
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0answers
25 views

SMTP server for Python parser

I'm trying to get emails into a Python application. There is an exchange server that marks some emails with a BCC address for archive@somedomain.com. I do not control the Exchange server. The email ...
0
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2answers
152 views

Sendmail and Gmail

I'm trying to send email with sendmail. I followed this how-to: http://linuxconfig.org/configuring-gmail-as-sendmail-email-relay I tried to send the email over console: echo "Just testing my ...
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0answers
21 views

Outgoing SPAM Protection for vps

We are providing VPS servers (both openvz and kvm) on Proxmox VE cluster. Recently, we have attracted a large number of spammers. While we manage to block the openvz ones by monitoring the number of ...
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1answer
119 views

GMail moves Exim4 emails into Spam

I am trying to setup email transfer to GMail. This bash command in OS Debian: echo "aaa" | mailx -r "xxxxx@xxxxx.xxx" -s"sdf" xxxxx.xxxxxxx@gmail.com But all of my messages GMail moves into Spam. ...
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1answer
29 views

Postfix rejecting inbound mail to virtual mailboxes

I followed this tutorial to setup an email server that uses virtual users. https://www.rosehosting.com/blog/mailserver-with-virtual-users-and-domains-using-postfix-and-dovecot-on-a-centos-6-vps/ I am ...