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

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3
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2answers
2k views

Sendmail Configuration to not deliver mail to local machine

I have sendmail up and running on an Ubuntu 8.04 machine. It can send mail correctly to all but the domain to which it is a part. How do I configure it to not send to itself for email addresses on ...
2
votes
2answers
721 views

postfix - different header checks for incoming and outgoing mail

How can I apply different header_checks for incoming and outoing mail using postfix? By default, all header_checks are applied to both incoming and outgoing.
2
votes
1answer
3k views

Postfix unable to create lock file, permission denied

I thought I had my postfix configuration all set up on my Amazon Ubuntu server but I guess not. I'm trying to set up an admin email account for 3 virtually hosted Apache websites. Here's my postfix ...
2
votes
1answer
2k views

Outlook 2010 exchange setup prompts for username@domain.local rather than email@domain.com

We use a hosted exchange service. When users want to set up Outlook 2010 to access their account, they open Outlook and run through the configuration steps. Autodiscover is enabled, and in the ...
2
votes
4answers
831 views

How can I route a SMTP message by FROM domain (not To, CC, or BCC)

I'm handling email for many different companies. Each company needs me to route all outbound email through a specific SMTP relay based on From address. What software configuration or technology ...
2
votes
1answer
281 views

2 separate postfix instances and confusion with IP's in received field of mail message

i have a problem with my 2 postfix instances. 2 separate IP's and coressponding domain names are setup on networking, they are working fine. I want second mail message (below) to have Received: from ...
2
votes
2answers
3k views

Forward Mails to Gmail

I have a postfix mailserver running. Mails sent from users to Gmail are showing up in Gmail, so it works in general. Same for all other freemail hosts I know. The problem is that some users have no ...
2
votes
1answer
3k views

how can i disable outbound mail in postfix?

i want to be able to send mail to someuser@localhost but not allow any mail to go out to the outside world from anyone to anyone. i've seen multiple entries about how to filter or restrict outgoing ...
2
votes
1answer
2k views

Mailman cannot relay e-mails to non-local domains

My e-mail server runs Debian with postfix, dovecot, amavis, mailman, with postfixadmin in a virtual domain setup. All works fine, except for mailman which is not able to relay e-mails to non-local ...
2
votes
2answers
5k views

Postfix auto create Maildir

I've been beating my head against a wall for a while now on this one. Basically, here is the rundown: Our MX record points to a frontend SMTP server, which contains aliases for actually routing the ...
2
votes
4answers
223 views

Does sending e-mail in the name of customers increase the risk of being marked as spammer?

We are developing a SaaS website application that lets users send invoices to their clients. Ideally, these e-mails should appear to be originating from our customers, so the sender e-mail address ...
2
votes
3answers
1k views

Bulk email advice

I need to send email campaigns for my site. There are services like mailchimp but I want to send my own. Do you know any good VPS providers for sending bulk emails?. What are the issues (such as ...
2
votes
6answers
6k views

Cannot send email to Hotmail or MSN addresses [duplicate]

I am running into a problem at work where end users are unable to email Hotmail or MSN email addresses. We are running an Exchange 2007 server and the message itself is in HTML and contains no ...
1
vote
1answer
2k views

Remove exim local username

How can i remove the local username in the mail headers with exim4 running on debian 6? Received: from root by host.domain.com with local (Exim 4.72) (envelope-from <reply@domain.com>) id ...
1
vote
3answers
3k views

How can I forward to a specific MTA based on email address?

How can I forward incoming messages to a specific MTA based on the username portion of the recipient's email address? I would prefer linux-based software, but Windows would work too. Background: Our ...
1
vote
3answers
517 views

Qmail Patching Makes me Nervous

We have a system running CentOS 5 with Plesk 8.6 and Qmail running. Our primary domain is hosted through Media Temple. When Plesk and Qmail are hosted on a single Dedicated Virtual server, it reads ...
1
vote
2answers
1k views

E-Mail Bounce Management

we want to improve our mailing lists by handling all the bounces we get. As I saw there are different approaches. One checks the badmail folder in IIS mailroot folder. Others check a email account ...
1
vote
3answers
14k views

How do I set up SMTP on Windows Server 2003 to forward all emails to a given address?

I'm setting up an internal SMTP server to handle software tests which involve the sending of emails. I want to configure the server so that any emails sent to myinternaldoamin.com get relayed (is ...
0
votes
3answers
2k views

postfix: catch outgoing mail and redirect

I'm trying to configure my postfix so all mail that goes through that has tld dev would be redirected to a root user, here is my config files: [alexus@wcmisdlin02 postfix]$ tail -1 main.cf ...
0
votes
1answer
206 views

How to make qmail to feed email into shell command?

I have some server running qmail, with many users/domains configured via plesk. I would like to get emails from specified address delivered to one of my users being feed to shell command, as addition ...
0
votes
2answers
318 views

Linux Sendmail server misdelivers mail to my own domain?

I'm seeing a very low percentage of misdelivered emails from my sendmail host. My sendmail server will try to email an address like "john.dough@johndoughs.own.domain.example.com" and the email will ...
0
votes
1answer
4k views

Postfix: virtual_alias_maps delivering everything to one user despite new domain

I have a postfix installation handling mail for a couple of domains, for which all mail goes to one real local user (cmb), and I want to add a new domain (let's call it example.org) for a second user, ...
6
votes
2answers
5k views

Postfix Relay to Office365

I am trying to setup a Postfix server on a Linux box to relay all mail to our Office365 (Exchange, hosted by Microsoft) mail server, but, I keep getting an error regarding the sending address: ...
4
votes
1answer
3k views

modify the recipient address of an email on the file in the postfix queue

I have a few emails in my mailq which are bounced for a good reason, the email address is wrong. I was wondering if it is possible to modify the address of the recipient on the fly. I can see the ...
4
votes
2answers
368 views

Creating a “fake” open relay to capture non-relayable outgoing mail with postfix

We occasionally have customer-provided servers in our technical support and engineering departments. They're isolated on their own VLAN, with strict firewall rules in place to minimize possible bad ...
4
votes
3answers
7k views

uuencoded mail attachments display as binary code

I have run into a attachment display issue at a client who has recently switched from Exchange 2003 to Exchange 2010. The issue was initially perceived as affecting only Mac OS X email clients ...
4
votes
2answers
239 views

Running a mail forwarding service, what are some steps I should take to prevent my IPs being blacklisted

Background: I'm about to launch a service which offers email forwarding for a large number of domains. Say you want people to be able to contact you using you@somesite.com, all emails sent to that ...
4
votes
5answers
2k views

Why are emails sent from my applications being marked as spam?

I have 2 web apps running on the same server. The first is www.nimikri.com and the other is www.hourjar.com. Both apps share the same IP address (75.127.100.175). My server is through a shared ...
4
votes
5answers
7k views

Migrate IMAP account between providers - client access only

I have an IMAP E-Mail account with my old provider. I have a new, empty IMAP account with the new provider. Is there a tool or Thunderbird to migrate the E-Mail data from one account to another? I'm ...
4
votes
3answers
6k views

Send As Distribution Group Email Address?

We have a Small Business Server 2003, with a support distribution group. Is it possible to allow members of a distribution group, send emails from the group email address?
3
votes
1answer
277 views

A record required for MX record?

Previously our domain, let's call it ourdomain.com, pointed to an IP address (our web host). In addition, we use Office 365 to handle our domain email accounts. DNS records: ourdomain.com A ...
3
votes
2answers
321 views

Alternatives to avoid domain from being blacklisted

We outsource our web and email hosting to a web hosting company and occasionally I get complaints from our clients or internal staff that mail from our domain does not reach the intended recipient or ...
3
votes
2answers
5k views

Can an email server be set-up on an Azure VM?

I am considering the possibility of setting up a simple SMTP+IMAP email server for internal use on an extra small Azure VM. When I say internal use I don't mean "used by internal users", but for use ...
3
votes
4answers
1k views

Does “\root” do anything in /etc/aliases?

I've found on a couple servers that have the following entry in /etc/aliases: root: \root,email@example.com You can send mail to /dev/null like this: root: /dev/null I can't find \root used in ...
3
votes
1answer
402 views

Troubles with Dovecot + Webmin on Debian 6.0

I installed Apache, PHP5, MySQL and Webmin on a vps. I host my website on that. I completely reinstalled whole VPS with fresh installation of Postfix and Dovecot. But Dovecot fails to start, so ...
3
votes
2answers
231 views

Forwarding-service for emails on external hoster by MX-record

I am registering domains on behalf of customers and host their websites on my server. I have complete control over the DNS setup of my customer domains. I still want to host their websites, but I ...
3
votes
5answers
3k views

How do I setup a secondary incoming mail server?

I currently have a server running Debian 6, with postfix and dovecot handling email. This server hosts email for a number of domains and users, so I use MySQL as my backing store for users and ...
3
votes
5answers
680 views

Fixing typos in user-entered email addresses

We see some typo domains in our mail queue from time to time and I have been thinking of using our internal DNS server to correct these people's mistakes. Some examples from the current mail queue: ...
3
votes
2answers
2k views

Can't get SmarterMail to work on fresh Windows 2008 server

Really having trouble with this, I've been through all the guides I can find and get stuck, using latest version of Smartermail 8 on Windows 2008 with IIS7.5. I have it setup so I can SEND emails ...
3
votes
4answers
829 views

Looking for an email encryption solution [closed]

I'm looking for an email encryption solution for a client. They are currently using Exchange 2007 but are willing to go to a hosted solution if necessary. They are looking for a solution that will ...
3
votes
2answers
4k views

How do I enter a strong (long) DKIM key into DNS?

I'm trying to enter a 4028 bit DKIM key into DNS and it seems that I'm exceeding both the UDP 512 byte limit and also the maximum record size for a TXT record. How does someone properly create a ...
3
votes
4answers
565 views

Emails from custom domain going to spam

I just bought a custom domain that I'm trying to use as my primary email address. However at the moment many of my emails are landing in people's SPAM accounts. Are there any cheap ways around this ...
3
votes
6answers
2k views

What is causing email sent from my Google Apps account to bounce?

I have started to get Delivery Status Notification (Failure) messages in response to emails sent from my Google Apps domain account (at offby1.net): Delivery to the following recipient failed ...
3
votes
1answer
5k views

Postfix Whitelist before recipient restrictions

Alright. Some background. We have an anti-spam cluster trucking about 2-3 million emails per day, blocking somewhere in the range of 99% of spam email from our end users. The underlying SMTP server ...
3
votes
4answers
2k views

Get cron to send html-formatted emails

I have a stats program which runs on log files via cron. The stats program can output HTML. Right now I rely on the MAIL_TO mechanism in the crontab. MAILTO=my@email.addr 55 23 * * * ...
3
votes
1answer
3k views

How to reduce the Sendmail DNS timeout period

I have a problem with the sendmail DNS timeout period when trying to sent to a email address which has a DNS issue. Let's say the problematic email address is test@problemdomain.com (not real one) I ...
3
votes
1answer
1k views

Exchange 2007 Distribution List with External Addresses

I have set up a mail enabled distribution list but cannot assign an external e-mail address, it only accepts addresses in the GAL. How can this be changed?
3
votes
4answers
1k views

Qmail does not forward mail to a specific domain

I have a dedicated hosting account with GoDaddy.com. I've pointed my domain's email to work with Google apps. The server has qmail running and it forwards email to all domains just fine except for ...
3
votes
5answers
434 views

Email Delivery To University Mail Servers (.edu emails)

I'm running an app at www.universitytutor.com which lets people find tutors. Most of the tutors are college students. We send out a follow up email 2 weeks after someone contacts a tutor to ask how ...
2
votes
1answer
163 views

cannot find postfix/mailx email in maildir, why not?

In a CentOS 7 development machine, I have configured postfix to allow emails to be traded between localhost addresses. Mailx is also installed. I am able to send email, and the log files indicate ...