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MaxBulk Mailer | Frequently Asked Questions

MaxBulk Mailer

Frequently Asked Questions

Compatible with MS Windows Compatible with MacOS


How to find out whether port 25 is blocked by your ISP?

This article explains how to find out whether your ISP is blocking port 25 on your account. Port 25 blocking prevents any 3rd party outgoing mail servers from being accessed while connected to your ISP network via Dialup, DSL or Cable. Many ISP's (Internet Service Providers) are blocking what is called "Port 25" which is the port used to send e-mail. They have chosen to do this to cut down on the amount of "SPAM" mail that is sent. All e-mail sent via the Internet is routed through the port 25, the channel used for communication between a mail client and a mail server.

Hopefully most of SMTP servers offer their service through at least one alternative port in addition to standard port 25. So, if MaxBulk Mailer can't connect to your server through default port 25 try to use port 587 or 2525. If one of those ports work for you you can simply ignore this article.

You can check whether you are affected by port blocking using Telnet.

Telnet is a user command using TCP/IP protocols to access a computer remotely. When you are connected to the network using telnet, you can enter commands and they will be executed as if the were being entered directly onto the server console.

Both Mac OS X and Windows XP operating systems come with Telnet. However, Telnet is not installed with Windows Vista by default, but you can install it by following the following steps: Click the Start button, click Control Panel, click Programs and Features, and then click Turn Windows features on or off. If you are prompted for an administrator password or confirmation, type the password or provide confirmation. In the Windows Features dialog box, select the Telnet Client check box. Click OK. The installation might take several minutes.

On Windows you just need to use the 'Command Prompt' located at Start | Programs | Accesories | Command Promt' and the 'Telnet' command this way:

telnet server_url port

For example:

Screenshot

If port 25 is not blocked you will get a successful 220 response (text may vary):

Screenshot

If port 25 is blocked you will get a connection error or no response at all:

Screenshot

On Mac OS X, you have to use the Terminal tool located in the Applications/Utilities folder and the 'Telnet' command line tool this way:

telnet server_url port

For example:

Screenshot

If port 25 is not blocked you will get a successful 220 response (text may vary):

Screenshot

If port 25 is blocked you will get a connection error:

Screenshot

Written by Stanley Roche Busk
for Max Programming, LLC


MaxBulk Mailer
MaxBulk Mailer is a full-featured and easy-to-use bulk mailer and mail-merge software for macOS and Windows that allows you to send out customized press releases, prices lists, newsletters and any kind of text or HTML documents to your customers or contacts.

MaxBulk Mailer is fast, fully customizable and very easy to use. MaxBulk Mailer handles plain text, HTML and rich text documents and gives full support for attachments. With MaxBulk Mailer you will create, manage and send your own powerful, personalized marketing message to your customers and potential customers.

Thanks to its advanced mail-merge and conditional functions you can send highly customized messages and get the best results of your campaigns. You also have support for international characters, a straightforward account manager with support for all type of authentication schemes including SSL, a complete and versatile list manager, support for importation from a wide range of sources including from remote mySQL and postgreSQL databases.

MaxBulk Mailer is a software tool that you purchase once, no need to pay on a per-email basis to submission services!


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Stan Busk If you want to make the most of the software that you have acquired at Maxprog, do not miss the Stan's Blog. It is a library of Tutorials and Tips covering specific features and tipical problems you may have when using our tools. This page is updated regularly depending on the topics discussed in our public forums and issues reported thru our HelpDesk. If you are interested on what we are currently working on (or want to participate in beta testings) don't miss the Stan's Logbook.
For years, MAX Programming has provided companies around the globe with sophisticated and innovative solutions. Our commitment to quality is not only evident in our products, but also in our people. It is our mission in Professional Support Services to ensure that our products perform to the fullest of their ability in order to meet the business objectives of our customers. We provide the tools and information required for improved productivity. To accomplish this, we offer an array of services including: Technical Support, Education Services and Consulting Services.

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