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

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0
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2answers
23 views

Will it work to use cPanel's global email filters to create a catch all address? [closed]

Essentially, my cPanel account has 'default address' disabled and we've moved from a hosting company that uses a catchall system to this cpanel account that doesn't. In the process we've also moved ...
0
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0answers
35 views

Make Postfix relay to a different host for sending email based on RECIPIENT domain

Is there a way to make postfix authenticate and relay on a different host for sending email TO a particular domain? The sender domain does not matter, I need postfix to relay to a different host if ...
-1
votes
1answer
46 views

POP3 and SMTP over port 80 [closed]

TL;DR I need connect mail clients over port 80. I have a requirement to allow to mail clients connect to my mail provider over port 80. Some users of my company works in clients workplace. In some ...
19
votes
1answer
6k views

How can e-mail be delivered to a domain without an MX record?

Somebody has 2 e-mail addresses: bob@domainname.com.br and bob@domainname.com . The DNS records for these domains look like this: domainname.com.br $ dig any domainname.com.br ;; ANSWER SECTION: ...
0
votes
1answer
56 views

Cant sent mail from own server to google

I'm running a mail server and I'm having problem with sending mails to google. Mails to other providers work fine. I guess its maybe related to my DNS settings, as I've read that google is quite ...
-3
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1answer
774 views
1
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2answers
32 views

sending emails from different Smtps in different IPs

I sent mails with different Smtps for example Smtp1 on IP 1.1.1.1 and Smtp2 on IP 2.2.2.2 . which my spf record for the From (info@myDoamin.com) part in emails is : spf1 include:mail.mydomain....
-1
votes
1answer
27 views

Which Email Server Expands the Recipient List into Many Emails?

When sending a message via a different SMTP outbound gateway, will a message containing multiple recipients in the BCC field be broken up into many messages by the originating server, or the server ...
0
votes
3answers
29 views

How do you send an attachment with sendmail?

How do you send an attachment with sendmail? I'm able to send an email with the below: sendmail johndoe@example.com < email.txt I can't find out how to send one with an attachment, I've tried: ...
1
vote
1answer
39 views

Confusing e-mail related to sudo

My system occasionally sends me this email. (My domain has been replaced with [DOMAIN] and my username has been replaced with [USERNAME].) Subject: *** SECURITY information for [DOMAIN] *** [DOMAIN]...
0
votes
1answer
63 views

Cannot send mail to postfix mail server

I've setup a postfix mail server, my domain points to my server as I'm already hosting the website. However I cannot send any mail to the mail server. I've added the email's such as casper@...
0
votes
3answers
41 views

SPF block on return-path mail

We make use of a unique return-path email on all email sent to track bounce backs and give feedback, but recently we're getting issues where the SPF record fails because people are allowed to send ...
4
votes
3answers
134 views

How do you separate emails for different roles an individual has?

I work at a university, where we have staff members who can also teach as an adjunct faculty member. We issue an account for the individual based on their name, so Joe Smith would get smithj@domain....
0
votes
3answers
51 views

How to separate linux accounts from email accounts?

I've got a small jack-of-all-trades server running CentOS 7 Linux. Now I need to add email support to it (SMTP/POP3/IMAP/webmail). Most of it is pretty clear, except for one thing - I'd like to ...
0
votes
1answer
42 views

Can I retrieve email marked as rejected in the SMTP log?

I am using a Sophos UTM 9 SG210 firewall and noticed in the SMTP log that a formerly trusted sender has had 50 legitimate emails rejected. I've since added them to an exemption list, but was ...
0
votes
0answers
55 views

Occasional “could not execute mail delivery program /usr/sbin/sendmail”

I seem to be having an infrequent issue with PHP and sending email. Most of the time it works fine but occasionally the email doesn't get sent. Looking in the website logs I can see a bunch of these ...
4
votes
6answers
16k views

What package to install for sending emails from localhost Ubuntu?

I have installed ubuntu on my server. I want the cronjobs to send me emails for output. How can i send emails from terminal . which thing i have to install and how will i put smtp or pop setting in ...
20
votes
4answers
2k views

What are the best methods for catching snowshoe spam?

I'm using Smartermail for my small mailserver. We've been having a problem lately of getting waves of snowshoe spam that follow the same pattern. They come in batches of 3 or 4 at a time. The ...
0
votes
1answer
47 views

courier-authlib: wrong username enters search query

I am trying to setup smtp authentication using courier, mysql on postfix. My passwords in my db are encrypted. When I attempt to connect, I get an auth failure r2d2 ~ # telnet mail.server.com 25 ...
0
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0answers
35 views

Set Low Disk Space email alerts for windows 10

I want to set email alerts for my disks, so that if there would be 30GB free space then I will get an email alert. I found some solutions for windows 2008 but they didn't work for me in Windows 10. ...
0
votes
1answer
72 views

Why don't my domain's messages to a google group get their headers rewritten so DMARC can pass?

Whenever my domain sends a message to a google group on another domain the DMARC alignment fails. This is true for all my approved senders, even using Gmail in my domain. It seems to be because the ...
17
votes
4answers
7k views

Is using SOFTFAIL over FAIL in the SPF record considered best practice?

Or put another way, is using v=spf1 a mx ~all recommended over using v=spf1 a mx -all? The RFC does not appear to make any recommendations. My preference has always been to use FAIL, which causes ...
0
votes
1answer
27 views

Route 53 email spam

Since 2 months our email address gets abused by a spam bot. It turns out that emails are send via our info@ email address to thousands of recipients of which many mails bounce back and land back in ...
1
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2answers
68 views

Exim4 does not add DKIM signature

Have spent 2 days trying to tell Exim to add DKIM signatures on my Debian8 server. No success. Have read many how-tos, forums but none of possible solutions wotk on my server. Have generated the keys:...
0
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0answers
35 views

Inbound message relay using SparkPost

So I've got SparkPost, and they've enables inbound messages, which I want to use. I can get it to send inbound messages to a web socket (https://support.sparkpost.com/customer/portal/articles/2039614-...
0
votes
0answers
16 views

Force Exim to deliver mail as if it were remote

I'm messing around with a mail server on a VPS. I can send and receive mail between my local account using exim user@mydomain.com. I can also send mail remotely to me@gmail.com (of course I get a ...
0
votes
1answer
20 views

Sending email from Google, Amazon and own mailserver from same domain with DKIM

I have a domain (example.org) for a organization, and we send different types of e-mail: I send email (From: user1@example.org), using my local email-server An other user (From: user2@example.org) ...
0
votes
1answer
63 views

Why is my mail blocked by Gmail (Marked as spam)

Three days ago I have installed CentOS with Directadmin what I've received from TransIP. The mailserver is now working, configured DKIM, SPF, DMARC etc. There is only one problem... mailproviders ...
0
votes
1answer
42 views

Weird mail issue

I've got this little script: $to = 'atsome@gmail.com'; $subject = 'the subject'; $message = 'hello'; $headers = 'From: Admin <admin@mysite.com>' . "\r\n" . 'Reply-To: admin@mysite.com' . "\...
3
votes
2answers
107 views

Secure Email Settings for Email Clients & for PHPMailer

I'm trying to work out how to make my outgoing/incoming email's as secure as I can possibly make them. First of all, my domain has Wildcard OV SSL Certificates, I have copies of the .csr, .crt and ....
-1
votes
1answer
54 views

Postfix lost connection with “server/host” while receiving the initial server greeting

I have postfix on CentOS6.6 on my local server(192.168.1.103), from which I'm unable to send emails to any domains. The following is the error obtained when sent to our company email.: Jun 2 11:...
32
votes
5answers
22k views

Why Does hotmail still reject my emails?

I have a very strange problem with my emails being marked as spam by hotmail. I just have configured Postfix + Dovecot on my server and all works perfectly. I can Send/Receive emails. I only have ...
6
votes
2answers
2k views

SPF vs. DKIM - The exact use cases and differences

I'm sorry for the vague title. I don't fully understand why SPF and DKIM should be used together. First: SPF can pass where it should fail if the sender or DNS is "spoofed" and it can fail where it ...
0
votes
2answers
45 views

Postfix Catchall - Avoid Spam

I've 2 accounts on my CentOS server configured with catchall email accounts. Lately I've been receiving bounced emails with virus that were supposedly sent from my server account, Ex: somestragename@...
2
votes
4answers
7k views

Why does Postfix accept MAIL FROM from an email it's not responsible for

I'm testing a postfix installation. I noticed that if I try to send mail from a fictitious account on another domain that isn't mine (unknown@NotMyDomain.com), to one of my local users (user@MyDomain....
1
vote
3answers
61 views

Testing Zimbra email routing

I am an experienced Exim user and just recently testing Zimbra Open Source, and I am loving it already. However, I am used to this command whenever I wanted to test email routing in the email server, ...
0
votes
1answer
28 views

Cronjob change email subject and sender name

I have a cronjob setup using crontab that looks like this... MAILTO=myemail@example.com 00 02 * * * /home/myaccount/myscript.sh This works great and at 2AM it runs the script and emails me the ...
0
votes
1answer
54 views

Dovecot, Courier, Postfix Differences [closed]

[This question might be against SO guidelines - too vague - too subjective. I have however failed to find an answer] Like this: Dovecot vs Courier vs Cyrus What is the difference between Postfix, ...
1
vote
1answer
22 views

Postfix with opendkim: missing id's

I'm setting up a high performance mailserver using multi-instance postfix with TLS and opendkim. This machine is only for sending. All seems to be well, except that when submitting lots of messages ...
0
votes
1answer
55 views

Hotmail is rejecting email from a digital ocean droplet [duplicate]

I have setup my site on Digital Ocean and point the Domain name "A" record to the Droplet IP. Emails sent by the site are being received in Gmail and other email clients ( SPAM Folder ) but it does ...
1
vote
3answers
106 views

How to set MAILTO in cron using Puppet?

The expectation was that there would be a mailto attribute, but the this source denies that cron { 'resource title': name => # (namevar) The symbolic name of the cron job. This name is ...
22
votes
6answers
67k views

how to fix “send-mail: Authorization failed 534 5.7.14 ”

I am trying to create e-mail alert on ssh root login so I had to install ssmtp and mail utility. Then I configured ssmtp.conf file as follows : # Config file for sSMTP sendmail # The person who gets ...
5
votes
2answers
2k views

Benefits of using a subdomain for sending email?

Assume I own the domain name, example.org. I am creating a setup where I receive email sent to me@example.org using Google Apps. The MX records for example.org already point to Google's servers and it ...
0
votes
1answer
41 views

Postfix: Alias from multiple adresses to one

I've installed a postfix/dovecot combination on my VPS the last days and everything works fine. Now I want to add mail forwarding, so that mails with a specific suffix, like this: youtube-account@...
0
votes
2answers
36 views

How to find out what Google account a domain is associated with?

I have a client who needs to add new email accounts to their domain. However, when I access the admin page for the domain, there are no email accounts there. And in the DNS there are MX records ...
0
votes
0answers
11 views

Window server 2008 - set up DNS server just for email spam requests

We have a small office network and use SpamAssassin to help get rid of junk email. I've noticed that as our network uses an upstream DNS server all our spam checks to services like URIBL get blocked ...
0
votes
0answers
42 views

Difference between mail and sendmail in regards of Laravel 5

I wish to have a brainstorm with you all about Laravel 5 and it's mail function. The point is: I have multiple servers with CentOS 7 installed and using them as webservers for laravel 5 based sites. A ...
1
vote
1answer
27 views

SPF redirect modifier

The SPF record for domain replace the current record. The macro-expanded domain is also substituted for the current-domain in those look-ups. Examples: In the following example, the ...
0
votes
0answers
72 views

How to BCC copy all outgoing emails with Postfix?

I have a VPS on DigitalOcean where I have installed Postfix. I'd like to add in BCC an email address of my choice for all the emails that passing through Postfix go to email addresses not in my system....
2
votes
1answer
2k views

BCC every incoming and outgoing e-mail in Microsoft Exchange

A content inspection system wants to inspect every e-mail that is sent or received outside organization's boundary (e.g. from/to Internet). I do not want to put the inspection system in-line as an ...