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

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23 views

How to set up email transparency on an exchange server

Stripe is famous for its email transparency. I want to replicate this, and specifically I want to have email be stored in an archived manner that anyone can search. I'm not really sure how to do this ...
7
votes
3answers
135 views

Does “~all” in the middle of an SPF record signal the end of the record when it is parsed?

Our company's SPF record format is as follows: "v=spf1 include:_spf.google.com ~all a mx ip4:X.X.0.0/23 include:spf.example.com ?all" So we have an "~all" in the middle of our SPF record. On the ...
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0answers
68 views

Emails keep going to Gmail spam folder - DKIM, SPF, are set up - Very perplexing [duplicate]

Note: This is NOT a duplicate question, there are no questions that address the very specific details of headers as far as whether the inclusion of multiple DKIM entries will result in landing in the ...
0
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2answers
147 views

Postfix Failed to Receive Email

I am trying to set up a mailing server with postfix and dovecot in ubuntu 12.04 following this guide. All seems to have worked out correctly and when I try this echo test | mail email1@example.org ...
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0answers
40 views

Disable mailboxes on Exchange 2007 while emails are being redirected to Gmail

I am trying to uninstall Exchange 2007 for a client as they have decided to use Gmail from now on. I have been going through some errors like the transport connector and the watermark and now I am ...
2
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1answer
116 views

Hotmail/Outlook dumping apparently valid emails

I've written some software that operates a non-commerical contact list for clubs, where the server sends out admin mails to the entire club. The emails are received Ok on Yahoo, gmail, and AOL, but ...
2
votes
3answers
12 views

Where, in Exchange, can rules from other sources be removed?

I have one user, out of almost 500, who has connected his Android phone to Microsoft Exchange; I've ensured that this has been done correctly, but he, at one time, set up some inbox rules from the ...
0
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1answer
50 views

SMTP doesn't work on distinct machine [closed]

I'm trying to setup TLS e-mail on remote machine, but it doesn't work. Trying to send e-mail on my local machine (Windows 7 x64 locale ru-ru): 16:33:18 CONNECT : Looking up host name ...
2
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1answer
38 views

Stop (most) local delivery in Postfix

I'm trying to setup a Postfix (2.11.4) configuration so that it does this: Sends out mail originating from the local server Accepts incoming mail for a single alias, which actually points to a ...
2
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0answers
158 views

nullmailer swaps sender and recipient

I want to send emails from my server through external mail server. So I installed nullmailer as one of simpliest MTA in Debian 7 x32. My /etc/nullmailer/remotes: smtp.example.com smtp ...
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2answers
87 views

Relay Access Denied - Postfix/Dovecot

Edit: Please, please read the answer before this whole thing, as it'll save you tons of time. Answering my issue was as simple as changing a setting with Outlook, it might be for you, as well. It had ...
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1answer
517 views

Temporary Lookup Failure - Postfix/Dovecot

Alrighty... So here's what's going on. I can sign in with Outlook to my Mail Server, but when I go to send an email, I get this error. Using SquirrelMail, I don't get any errors, sending works fine. ...
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2answers
39 views

Is it possibe to do an exclusion in an MX record? [closed]

Is it possible to exclude certain addresses or wild card addresses using an MX record?
-4
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1answer
163 views

Ignore MX record and send mail directly to an Office365 address [closed]

I'm a bit of an amateur at this so bear with me, here's the problem: The current email provider for the company only allows a single Office365 exchange account per subscription. They do not allow ...
-2
votes
2answers
88 views

Ubuntu mail command - where does it store sent mail?

I am very new to Ubuntu and have an issue where sent mail from our Ubuntu Server has been failing for a number of weeks. We are using the mail command (invoked from PHP) like so: ...
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1answer
94 views

No longer able to send e-mails from Ubuntu server to Gmail group [closed]

I have an issue where sending e-mail from our Ubuntu server to a Google Group account no longer works and results in the Google group rejecting the e-mail. (Please note that when I say Google Groups, ...
0
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1answer
1k views

Getting a [550 5.1.1 Recipient not found] (Can't receive email) with CloudFlare

I'm having troubles with my email account. I'm using GoDaddy's Email service and the domains that are not connected to CloudFlare are operating just fine. The problem comes in with the domains that I ...
0
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1answer
883 views

Postfix milter-reject: END-OF-MESSAGE from 4.7.1 Service unavailable - try again later

I am running postfix-2.11 version and recently i have added dkim-milter-2.8 Postfix configuration: # DKIM milter_default_action = accept smtpd_milters = inet:localhost:8892 non_smtpd_milters = ...
0
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1answer
72 views

DKIM syntax, DNS Server rejected [closed]

I really need help on why my DNS host keeps on rejecting this entry: default._domainkey.myschool.edu.sg IN TXT "v=DKIM1; k=rsa; p=MIGfM...hZwIDAQAB;" I added our domain based on what I have read so ...
-1
votes
1answer
78 views

Automated email sent using Bash mail function gets filtered as spam by Gmail [duplicate]

I have a Bash script which is scheduled to run everyday and sends out user notification emails using a command like: mail -s "Hello World" someone@gmail.com Why is this email detected as spam by ...
0
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1answer
423 views

Relay Denied SMTP error from remote mail server after RCPT TO: <email@example.com>

Hi I have a problem when I want to send mail using smarthost method in exim and usage Mailgun as SMTP server for relay. this is my configuration dc_eximconfig_configtype='smarthost' ...
1
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1answer
87 views

Cron errors routing to external mail server instead of local

For some reason some usernames on a Solaris 10 system that have cron jobs send the cron errors to an external mail server to be routed back to the generating server which is blocked because of ...
0
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0answers
90 views

MDaemon - Configure shared SMTP domains

someone can help me with the configuration of Mdaemon to accept mails from Office 365 in a coexistence scenario? I'm in the process to setup coexistence from O365 to Mdaemon. No problems on Office 365 ...
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votes
2answers
140 views

Internal SMTP server no longer delivering to Google Mail

Our corporate email is hosted on Google Apps, along with 5 domains for various products. Internally (Behind our firewall, not exposed to the internet) we have an IIS server running Microsoft ESMTP ...
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0answers
13 views

What is the correct SPF setting if I want a specific IP, hosting provider's MX, and GMail to work for sending emails coming from my domain? [duplicate]

I have never set up an SPF record, so I am trying to make sure I understand what I am doing before causing all sorts of havoc. Let's say I have a domain example.org which is being hosted by ...
1
vote
2answers
168 views

PHP Mail Delayed Shared Hosting [closed]

I'm developing a Drupal site on very generic shared LAMP hosting. My client insists on using the shared hosting company for some reason. (Is it OK to mention the hosting company?) E-mails are sent ...
1
vote
1answer
120 views

Postfix, hostname and /etc/aliases

After having dig for hours on SF/SO and googled a lot, I still can't figure out how /etc/aliases is used by postfix. I use an Amazon Linux EC2 server (kind of Centos6) My server hostname is set to ...
0
votes
1answer
25 views

Load balance prevent from seeing email

Some of our email are hosted with Network Solution, Yesterday we setup load balance on our WAN connection. Since we did it, our user cant log on to their web mail interface. Each time they try to log ...
5
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3answers
857 views

Have a valid SPF record but still can spoof my email

I have set up an SPF record for my domain, but I still can spoof email-addresses for my domain using fake email services like this one: http://deadfake.com/Send.aspx The email does arrive to my gmail ...
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0answers
40 views

Sending mail between two exim servers

My two servers are nagios1.example.com and nagios2.example.com, They are both configured with local mail and smarthost. On nagios1 in /etc/aliases root: root@nagios2.example.com On nagios2 in ...
4
votes
1answer
420 views

Replacing an MX record with a CNAME that doesn't match the hostname

Today we have 5 companies that all use Google for email services example1.com. 3w IN MX 10 mail.Google.com. example2.com. 3w IN MX 10 mail.Google.com. ...
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votes
1answer
482 views

Sending email from PHP through exchange [closed]

I figured serverfault might be a better fit for this question. I'm trying to send emails with PHP mail() function. PHP returns no errors and says the email has been accepted whether it sends or not. ...
0
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2answers
207 views

How to block IP addresses from port 25 [closed]

PROBLEM: Users are getting 15-20 SPAM emails per hour, even with SpamAssassin set to its most aggressive settings SOLUTION: SPAM filtering services are available from companies like McAfee (Intel). ...
2
votes
1answer
48 views

Catch incoming email and then deliver to original recipient on sendmail

in the company I work for there are a user that is making bad use of the email, but to have evidence of what he is doing we need to intercept all the incoming email to him and all outgoing email from ...
0
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0answers
54 views

Exim 4.72 doesn't verify recipient

I have a problem with recipient verification. I have next configuration for acl_check_rcpt: accept hosts = : deny message = "Invalid characters in the address" domains = ...
0
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0answers
20 views

Is “Received: from hostname (localhost [127.0.0.1])” triggering spam filters? [duplicate]

I am running my own postfix Mail Server. All my mails are Spam filtered (at least by Gmail and Yahoo). I don't really know why they are filtered, because I have implemented SPF, DKIM and DMARC. ...
0
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0answers
78 views

Hotmail SMTP cache?

So this is an odd one ... Does Hotmail in anyway resolve and cache information for MX records or A records for individual email addresses? For Example: I setup a personal test bed mail server and ...
0
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0answers
25 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
votes
1answer
80 views

postfix apparently relay email

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 06:26:13 ...
4
votes
1answer
136 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 ...
0
votes
0answers
31 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
votes
1answer
57 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
510 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: ...
4
votes
2answers
454 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 ...
1
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0answers
58 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
votes
1answer
498 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
votes
1answer
71 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, ...
1
vote
1answer
128 views

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

Problem Unexpected empty emails are sent by an unknown source since 12 January, 2015. Attempts to solve the issue they are all from company where I do network/sys support they are all from Windows ...
-3
votes
1answer
155 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
vote
1answer
51 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 ...