Hot answers tagged mail-server
18
Potentially, but then no more than anyone with a regular domain name.
Spam filters look at the contents of e-mails to determine whether they might be spam or not and if you trust a sender you add their e-mail (either the specific address or the entire domain) to your whitelist.
Now, while your domain and address is random, it should be treated no ...
7
There are several widely used free email servers of which the best known are:
Sendmail: Known for its cryptic configuration file syntax. Sendmail.cf is legendary for this, and is actually turing complete.
Exim: Another widely used open-source email server.
Postfix: This is noted for its efficiency and security by design. I've been using Postfix since ...
7
If you are trying to send from a home-class Internet service using a DHCP IP address, the entire subnet has been listed as DHCP by your ISP (they are required to do this), and that has been picked up by the blacklists. If you have a DHCP IP address, another major issue is that your PTR DNS record (used to make sure that you are who you say you are, and not a ...
6
If you're having trouble configuring the standard mail programs, you can use a command-line SMTP client such as sendEmail. Along with the address, message, and other data, simply specify an SMTP server. You can use GMail along with a username and password for example.
Here are the available command-line switches:
6
I actually do exactly that on my Exchange Server: I create different e-mail addresses for every business I do business with, and associate them all with my account. I have Dell@, Symantec@, etc. If one starts getting SPAM, I can delete it, but I also know who is not careful with my e-mail address.
You will potentially run into problems, but not because of ...
5
Your fundamental problem is going to be that even if you wrote or found a mail server implemented in PHP, you're not going to be able to run it on your host.
The web server executing your PHP scripts is listening on port 80 (and maybe 443), not 25, 587, or 465.
The scripts will get terminated by the web server after running too long or using too much RAM.
...
4
In addition to what Chris said it also depends on the IP of your host. I deal with customers who get go daddy domains and domains hosted in eastern Europe only to find out the IP is on 20+ blacklists. Of course you can petition the list to get off. But be careful some unscrupulous providers have their entire blocks black listed and some of the black lists ...
3
You probably won't have trouble getting in to other people's mailboxes anymore than if you had the email someemail@somesite.com. Most (all?) filter programs can't distinguish between f902j3@sdkfj.com and joe1243@site.com, provided that you have your email server set up correctly.
That being said, don't reinvent the wheel if you don't have to. Gmail has this ...
2
I'll give you two choices:
First, you can edit the file /etc/postfix/main.cf, and delete the line that starts "always_bcc=". You'll need root access to edit it; if you're comfortable using a command-line editor like vi or nano, you can just use that with sudo. If you're not comfortable with that, I recommend using TextWrangler -- it can use your admin ...
2
Check if you're listed here: Spamhaus Blocklist Removal Center. There's another blocklist checker here.
Note that Microsoft says:
If Microsoft believes that unauthorized or improper use is being made of any Service, it may, without notice, take such action as it, in its sole discretion, deems appropriate, including blocking messages from a particular ...
2
Wikipedia has a big list of mail servers, but doesn't mention which ones are free.
For Linux there's postfix, exim and plenty more.
2
The most common mailserver of this type is "Sendmail" most unix systems either have it installed or can add it as a package. Sendmail will run in a Cygwin shell if you want to run it on a windows box or you can download a cross platform version.
Sendmail is tried, tested and a very mature program. You can do quite a bit with it!
Hope this helps you ...
2
I would recommend xmail as a production intranet email server on windows because it is very easy to configure and administer while being quite feature rich. Mercury is a bit tougher to administer, but has more features.
1
You might try looking at this since you're new to it.
https://help.ubuntu.com/community/MailServer
It's the Ubuntu wiki hub for building a mail server and which packages are avalible in their repositories, And it should be totally free (always a bonus).
Hope that helps,
Kravlin
1
Wherever you downloaded EFS from, or any IP hop in between knows that you probably have an open SMTP connection at your downloading address and therefore can SMTP "ping" your mydomain and then sell the address off to spammers.
Did you have to register the download? Does the spam have a proper To: address or is it made up? If my guess is correct, that kinda ...
1
the reason for this is because you are sending the mail from your localhost via the ISP. a lot of spammers do this. this is the reason why dynamic sub-nets of ISPs are on the "black list" for outgoing e-mail.
because this is a security setting handled by the service provider, you have to check with hotmail directly.
you could start here
...
1
If you're on a blacklist you're either sending spam, or sharing a subnet with someone who is.
Since you mention using a local mail-server it sounds like your ISP has chosen not to block outgoing SMTP-traffic, which makes it all the more likely that a malicious (or virus-infested) user was sending out enough spam for the subnet to be blacklisted.
First of ...
1
I handle this a little differently. I created a yahoo group called something like myredirect@yahoogroups.com. I am subscribed, but no one else is. I hand out that address and when someone sends mail to it, they accumulate awaiting approval. Every so often I look through the senders and approve those who I want to hear from and the rest gets dropped in ...
1
As the requirement is to generate real mailboxes that can be accessed via pop3, a linux server may be the simplest choice.
SMTP server for incoming email: exim
POP3 server for collecting emails via pop3: dovecot
Adding users on the fly can be done with
useradd -m -p <password>
Where password is pre-encrypted password, generated by the crypt() ...
1
Having all nameservers on the same box (VPS or not) and even on the same subnet isn't recommended. Some kind of backup DNS service could help.
As for the website -- your question is too general without knowing the specifics. It really depends on the load, number of visitors, whether the site is static or dynamic. For lightweight websites, that VPS may be ...
1
In your DNS server, you need to add two records.
The first is an A record, and will look something like this:
mail.mydomain.com. 14400 IN A <ip address of strato>
This defines a new record that will resolve to the strato IP address
The next is:
mydomain.com. 14400 IN MX 10 mail.mydomain.com.
This will say that any email for mydomain.com should ...
1
When you send mail with neither "TO" or "CC" field set but with a "BCC" one, your mail is displayed as being directed to "undisclosed-recipients". If you have inadvertently set the BCC to some valid external email address(es), the mail will be sent to them and you'll have no trivial way I'm aware of to know what these addresses were.
1
I believe phpList may help you in case you want a dedicated system. But is the solution worth the effort?
You can just create local rule in your mail client to forward email accordingly. Say IF the incoming message has certain qualities, THEN it is forwarded to said technician.
1
That depends on what kind of IP address you have (assuming static IPv4 here) and with whom your domain is hosted.
You will need to set the A Resource Record of your domain to point to your IP address. The provider I use for hosting domains lets me change the DNS entries online, but you might have to open a support ticket with your provider if he needs to ...
1
There are plenty of great tutorials out there on how to set up an Exchange server if you are looking to do that. One such tutorial can be found here: http://www.enterprisenetworkingplanet.com/datacenter/Installing-Exchange-2010-Step-by-Step-3877601.htm
It will walk you step by step on how to install and configure your Exchange server.
There are also great ...
1
Yes you can do this to answer 1,2,3 and 6.
You can run your own server as well, but remember that by doing so means it's "Open" to the outside world's malicious attacks so a good firewall is in order.
Any way, my suggestion is
Buy a domain name if you haven't got one (although I suggest you buy a new one just for testing).
Point the MX record to your ...
1
Most mail servers store emails either in "Mail Folders" or "Mail Dirs"
"Mail Folders" means that each folder/category has all the emails stored in it, one
after the other.
"Mail Dir" means each folder is actually a directory with each mail message represented
as a single file in that directory.
You are correct in saying if ...
1
Personally I would do it by modifying my custom "before_send" hook in Amavis config (just because I am using it already). Another (easier?) option would be to replace dovecot-lda in Postfix config with your own simple script which would take the message text from stdin, filter out the lines you don't want and send the result to the real dovecot-lda.
1
For 1) and 2):
You can set up a custom Receive Connector in Exchange that allows your preferred authentication type, and can be limited to accepting connections from only certain Networks, IPs, User types, etc.:
If you are aware the credentials are sent in plain text (with basic authentication), then you understand the primary security risks, and you'll ...
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