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

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7 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, ...
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1answer
6 views

Dovecot, Courier, Postfix Differences

[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, ...
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1answer
2k views

Recipients Auto Rejecting Emails Sent With Exchange 2010 - Certificate Error

A strange problem recently developed with one of my Exchange 2010 servers. I have an exchange server setup as part of a Windows Small Business Server 2011 installation. The email for the domain was ...
1
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1answer
15 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
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1answer
19 views

Hotmail is rejecting email from a digital ocean droplet

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 ...
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2answers
2k views

Setting 'From' header for cron email using msmtp

I've got msmtp setup on Ubuntu 10.10 so that cron can send me emails. That works like a champ, for the most part. However, emails coming to my gmail account show up as coming from (unknown sender), ...
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1answer
2k views

Exchange 2010 530 5.7.1 Client was not authenticated from some MTAs

I have a strange issue on an Exchange 2010 Version: 14.03.0158.001 (latest to date). The receive connector is set up correctly, with anonymous users checked, but still, I can receive mail from some ...
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3answers
39 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 ...
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6answers
58k 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 ...
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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 ...
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2answers
2k views

Exchange IMAP4 connector - Error Event ID 2006

A couple of users in my organisation use IMAP4 to connect to Exchange 2007 (Update rollup 9 applied) because they prefer Thunderbird / Postbox clients. One of the users is generating errors in the ...
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0answers
16 views

Apple Mail can't connect to second domain on server

I'm not sure if I'm at the right place or if this question is too basic, but with the search I did, I wasn't able to find an answer. So, I use Apple Mail to fetch emails for my website hosted on ...
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1answer
38 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: ...
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2answers
34 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 ...
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0answers
14 views

Local LAN Email setup [on hold]

Can someone recommend me a free email Software (server) which I can use to install on our local LAN for workgroup email only. Nothing fancy, no domain name needed. This should support inter-VPN ...
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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 ...
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0answers
11 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 ...
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1answer
21 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 ...
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1answer
1k views

How to edit bad word filter in SpamAssassin?

How can I add several custom "bad" words into SpamAssassin, so emails that contains that words are marked as a spam? UPDATE one of the keys is to edit file /etc/mail/spamassassin, and to add badword ...
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0answers
48 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 ...
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2answers
3k views

PHP Mail ssmtp wont work

I can send an email through the terminal command ssmtp just fine but I cant send an email through PHP with the mail() function. I have configured it to do so correctly (afaik) through php.ini. ...
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4answers
4k views

Outlook 2007 login prompt repeat prompt and exchange 2010

It seems when I first setup a new user in Outlook 2007, a login prompt comes up and asks for credentials. After the account is setup, the login prompt will repeatedly prompt throughout the day and is ...
2
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1answer
1k 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 ...
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0answers
11 views

Simple cross platform way to archive selected emails

We are a small NGO with its members using a various email-clients on various operating systems. We have the requirement to archive all external mails to and from a selected set of partners and ...
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1answer
49 views

%CPU at 99% when cronjob runs php script every minute

I am using a debian server and for some reason when I run this php script using crontab every minute it says that I am using 99% of the %CPU with the php command (in the cronjob the command is php) ...
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5answers
550 views

Is it becoming impossible to be a small mail provider?

I operate a small mail server for my private emails, some friends who have websites and two NGOs. In total my server sends between 60 and 400 messages a day. Now a lot of these emails are personal ...
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0answers
26 views

Email delayed 9 hours [closed]

I have a webserver, that also sends out password confirmation/recovery mails. The raw message headers show that the emails are delayed exactly 9 hours, which is strange. The special thing about this ...
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3answers
4k views

dovecot start “Address already in use” error

I'm currently trying to use some "me@mydomain.com" adresses on my dedicated server (Centos5). To do so, I'm tring to launch dovecot with /etc/init.d/dovecot start, but I get the following error ...
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2answers
27 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: ...
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0answers
21 views

production mail server setup with opendkim, spamassassin, clamAV [closed]

i am told to setup a new mail server? any help will be useful.thanks i advance. postfix/dovecot spamassasin clamAV opendkim etc... any help or useful tutorial will be great..
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1answer
1k views

MailEnable error on windows server 2008 r2 : Reason: Remote SMTP Server Returned: 550 5.7.1 Unable to relay for info@example.com

I am going crazy about this error message. for some of the domains, I am receiving this error message; Reason: Remote SMTP Server Returned: 550 5.7.1 Unable to relay for info@example.com I am ...
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votes
4answers
49 views

SPF, CloudFlare, Google Apps - Email sent through Contact Form marked as spam

One of the main reasons of putting your server behind CloudFlare is to hide your server's IP address so an attacker can't DDoS your IP and render CloudFlare obsolete. By putting your server behind ...
7
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1answer
81 views

Trying to setup mail server, can't get ports (25, 587) to work

I've searched everywhere and I'm really struggling with this one. I think I've tried just about everything. Background info VPS with CentOS 6.7 Postfix 2.6.6 dovecot, amavis, mysql, fail2ban I've ...
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2answers
18 views

Service to test outgoing mail for SPF/DKIM/SRS validity?

We're setting up a redirection-based mail server with a lot of complex moving parts, including the standard ones that apply to everyone like SPF/TLS as well as the more complex ones needed to ensure ...
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votes
1answer
20 views

Telnet times out on local machine but works externally

Im trying to get inbound mail working with postfix. Nothing is showing up, even in the maillog. Outbound works perfectly, but inbound doesnt. If i use telnet from an external server over port 25, i ...
0
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1answer
16 views

Mapping of Exchange error codes to SMTP status codes

Exchange error codes use a dotted notation x.y.z, for example 4.3.1 is an "Insufficient system resources" message. Is there a 1:1 mapping between this and SMTP error codes without dots (431) and if so ...
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0answers
6 views

Exim to forward all mail to mailin

How can i setup exim, to store mails regulary but to send copy of them (forward) to local mailin server runinng on port 9025 for example? Same question is for sending mails, i want to send them to ...
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2answers
1k views

Exchange 2010 send from multiple domains

We have a Windows 2008 Enterprise R2 SP1 server with multiple accepted domains configured on our Exchange 2010 console. Configuration of exchange 2010: In exchange console, under organization ...
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0answers
5 views

Software to send all mails to external script with exim and dovecot

I am using exim and dovecot, and i have used roundcubemail for reading and sending. Now i need solution to create api for sending mails via php and smpt, and solution to forward all incoming mails to ...
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0answers
28 views

Is there a way to prevent sendmail/php scripts from relaying email through a smarthost? [on hold]

On a cPanel server, running EXIM as a mail server, I implemented a smarthost to send email though Sendgrid. I'd like to route only business email though this smarthost. That is, emails sent from ...
0
votes
1answer
39 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
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0answers
24 views

Postfix Not Sending Or Receiving Emails

I followed this tutorial to setup a mailserver on my centos VPS: https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql-on-centos-6 And I am able to send emails to my account ...
0
votes
1answer
21 views

Fail2ban not respecting email settings

In Fail2ban I have set up my email settings as: # Destination email address used solely for the interpolations in # jail.{conf,local} configuration files. destemail = me@hotmail.com # # Name of the ...
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3answers
1k views

Unable to send mail through php script

I have setup a server with the following settings: CentOS release 6.3 (Final) Kernel \r on an \m Linux version 2.6.32-279.14.1.el6.x86_64 (mockbuild@c6b8.bsys.dev.centos.org) (gcc version 4.4.6 ...
0
votes
1answer
1k views

EXIM - 550 Cannot receive from specified address - Sendgrid

We're having some intermediate issues with exim where some emails go through and then others get the 550 Cannot receive from specified address Error. This is the guide we used to setup EXIM: ...
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votes
1answer
16 views

Exchange sendas from disposable +plus email adress [on hold]

I'm trying to set up marketing automation and like to send the email with bounce tracking through my exchange 365 server. The marketing automation suize uses disposable addresses like ...
2
votes
1answer
31 views

What exactly does “probable open proxy: command=POST” mean in sendmail logs?

I noticed the following in my sendmail logs: May 11 11:11:16 foobox sendmail[21111]: uADEFHG21111: [1.1.1.1]: probable open proxy: command=POST http://foo2.example.com May 11 11:11:16 foobox ...
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votes
2answers
2k views

Email Autodiscovery Not Being Probed By Android

Android's default email client is supposed to probe the server for the domain of the user's email address per outlook autodiscovery. This bug seems to indicate that at least the first two steps of ...
0
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1answer
24 views

How do I specify the hostname SPF shows to users?

I have a production Magento site which is on a dedicated host. The machine has it's "hosting" name, host-123.hosting.com, as well as its public name, buystuffhere.com. DNS has been configured for ...
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0answers
10 views

Email issue not going to rediffmail. However - email going to other account and email been received by rediff from other accounts

I have recently migrated server Initially there was a problem in sending email to rediffmail due to Helo issue. It was rectified through PTR set up Emails were going Now am finding a new issue in ...