Wise To Block Port 25 & 26 (for Email)

Jun 11, 2008

I login & send email through thunderbird using SSL and it's ports (so I no longer connect using 25/26). Occasionally I use webmail (Squirrelmail)

My scripts do send mail via sendmail.

Does my cpanel server still need the basic 25 & 26 ports to deliver and receive mail successfully, or can they be blocked in APF without any problems arising?

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How To Block Port 25 Using IPtables?

Apr 13, 2009

For some reason, I want to block port 25 for temporary time while editing the exim config and open it back using iptables -F command.

Anyone can let me know the command to block port 25 using IPtables command.

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How To Block All Traffic To A Port

Jun 3, 2007

How do i block all traffic to a port using iptables?

For example, i need to stop all incoming traffic on port 80 of my server.

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Email Server Port- How To Change/add Port For SMTP

Feb 19, 2008

Currently I am using Linux + cPAnel and using the port 25 for email sevrer. Currently we facing 1 problem is, some user's ISP is not support port. May I know how can I add additional port into server and allow users to send mail by different port?

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Block External Access To Cpanel Through Port 2082?

Jun 2, 2008

if it is possible to block external access to Cpanel through port 2082?

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Wise To Use A CPanel VPS For Shared Hosting?

Apr 3, 2009

I have been hosting several of my clients (for whom I have created a web site) on a cPanel VPS. The VPS is Xen-based, has 1GB of RAM, 2 CPU cores, 80GB of disk space and 800GB of bandwidth. Everything is running smoothly and I'm quite satisfied. It has a VPS-optimised version of cPanel and the speed is just as good as a dedicated (sometimes even better). I even have a second, small, VPS as a secondary nameserver.

Now it comes to this. I am planning to sell shared (and in the future possible reseller) hosting. Is it wise to stick with a VPS or to get a dedicated? The investment it takes differs a lot, since a VPS can be a lot cheaper than a dedicated server (depening on what you need and your provider of course).

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Wise For New Websites To Start Off With A Dedicated Server?

Jul 12, 2008

A lot of people start off with a dedicated server when they first start their website because they feel they will eventually need it anyway. They also don't want to go through the trouble of transferring their website in the future. Do you think it's wise for a new website to do this or do you feel they should start off with shared hosting and then transfer their website after it already has a lot of traffic?

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Block My Own Email Address To Receive Spam

Jun 11, 2008

I have configured qmail+spamassassin. It working find but still I have 2 problem. I am receiving spam mails from my own account to my own account e.g. from=info@domain.com to info@domain.com. How can I block this spam?

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Plesk 12.x / Linux :: Block A Domain As Email Destination?

Mar 19, 2015

I'd like to know if it's possible with Plesk 12 to block a given domain as destination of emails.

For example: imagine I want some customers not to be able to send emails to addresses in the domain "@parallels.com".

I use Postfix for outgoing mails.

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Can Rbl Antispam Filters Block Emails Sent Through Clean Email Servers

Jun 24, 2007

I have noticed that a customer's emails are banned by certain RBL/antispam filters even though they are sent using SMTP-Authentication through a non-banned SMTP server.

It seems that its ISP IP is blacklisted..... Is this normal?

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Email SMTP Port

Jul 29, 2007

I just enabled SMTP on my box, and tried requesting a loss password on my website, i get this error.


Warning: mail() [function.mail]: Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set()

How do i get rid of this error.

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Accessing Email Through Port 80

Jan 29, 2007

I have a reseller account that uses WHM/cPanel. So of course, SquirrelMail and Horde are already installed. I like to check my email at work, but unfortunatley, my employer blocks connections for say mydomain.com:2095.

Is there a way around this? I'm too much of a noob to try and install Horde again, bypassing the cPanel. I use Horde as the example because I need a good calendar and address book.

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CPanel, Email And Smtp Port 587

Aug 6, 2008

Is anyone successfully using cPanel with smtp port 587 and have a working email account?

After deciding that Plesk wasn't for me due to the lack of reference material in this and other forums, I had my hosting company, ServInt, delete my old vps and install a new one with cPanel.

Everything went fine until I configured my email. Just like with Plesk, I cannot access the smtp server via Outlook. I can ping it successfully, but it either terminates the connection or doesn't recognize the correct user name and password. With Plesk, it was a simple matter of enabling the use of port 587.

Not so with cPanel, at least for me. Even though the Exim service is enabled and another instance is enabled on port 587, I still can't connect. Thought it might be CFS, which is new to me with this install, so made sure it was disabled. Opened up a ticket with ServInt and even their techs can't get it functioning, so _they've_ opened up a ticket with cPanel.

Hence the title of this post, I can't beleive that I'm the only one whose had this problem before because blocking port 587 has been done by BellSouth/AT&T for many years now.

Nothing like having your company email down for over 6 hours to keep you up at night.

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FedoraCore2 - Cannot Telnet Out To Port 25, So Cant Send Email

Jun 23, 2005

if i try to telnet to yahoo's mail server, i get this:

[root: #] telnet mx1.mail.yahoo.com 25
telnet: connect to address Connection timed out
telnet: connect to address No route to host
telnet: connect to address No route to host
telnet: connect to address No route to host

but it works from one of my other hosted servers.
this keeps mail building up in my queue as it cannot send mail out cause the connection times out.

I can telnet locally to send myself email. This is my own dedicated server.

i have no idea whats up - default policy is ACCEPT in the OUTPUT chain of iptables.

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Apache :: Listen On Port 8080 For IPv4 And On Port 80 For IPv6?

Aug 8, 2013

I'm runnung a server with Apache2 (Apache/2.2.16 (Debian 6.0))

I would like Apache2 listen on port 8080 for IPv4 and on port 80 for IPv6.

This is what I have now:


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Did Port 80 Port To 7080, But Not Working When Login

Jun 21, 2009

I have an office internal website and I opened a port in the gateway of my office (7080) to this website (server )'s 80 port. That makes this website open to public as office has static IP. And then when I view the site from home . it's fine. But when I tried to login, the site is using a pop-up, I guess it's http authentciation, login, I was redirected to a url without my port number any more, that stops my access to the site as obviously I would.

How can I keep my connection/port number ...?

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Giga Port Vs Mega Port

Jun 18, 2008

about the NIC and switch,

there are giga port vs mega port,

in your experience,do they really be different?

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Changed SSH Port - How To Add Extra Port To APF

Jun 10, 2007

I recently changed my SSH port, but locked myself out when my APF firewall was installed.

Where would I got to add a custom port inside the APF's config file?

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Way To Block IP

Jul 8, 2009

I am curious, what is the best way to ban certain IP from accessing server? I have software firewall (APF) and there is, of course, /etc/hosts.deny.

Which is the most efficient? I've read that software firewall becomes unstable after so many entries. Does the same apply to /etc/hosts.deny file?

Or is there a better way altogether?

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How To Block IP

Jun 8, 2009

some Chinese forums hotlinking images from my site and I even delete those images they keep sending me huge amount of http requests to my hosting server and eating 800mb of memory and upto 1GB cause server crash

I tried to block incoming referrer traffic from those sites using htaccess but it didn't work , I still see their http request on my server logs and memory keep goes high , am not sure my code is the right

how can I block these http request from these domains , what is the right htaccess code , I use DirectAdmin panel by the way

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Block IP, How To

May 16, 2007

Can any one let me know how to block a range IP on SSH?

Eg: i'd like to block all IP: 67.63.123.xxx

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How To Block A Block Of IP'S

Jan 9, 2007

I'm currently experiencing a lot of IP's starting with 200 and 201 (from Brazil) some IPís have over 200 connections. I have APF installed and want to know how to block a block on ip's if this is possible.

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How To Block All Other IP And Allow Certain IP Using APF

Apr 27, 2007

I have DDos Attack right now so I want to block all the IP from all over the world and just allow certain IP range.

How to do it using APF or any other way.

For example I want to block everything but Germany IP


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