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Relaying denied / Delivery not allowed error | MaxBulk Mailer ▸ Frequently Asked Questions

Relaying denied / Delivery not allowed error

MaxBulk Mailer ▸ Frequently Asked Questions

Compatible with MS Windows Compatible with MacOS

Relaying denied / Delivery not allowed error (SMTP error 550, 553, 554)

Relaying is the process of sending a message from one point to another through an intermediary (using the SMTP server you have been assigned to send e-mail messages to recipients whose addresses belong to other server). Any mail server that supports this should have some kind of filter system in place to avoid unauthorized use by spammers. Mail servers without this protection are open to hijacking.

In order to be granted to relay you have to be properly authenticated or at least allowed to do it. So maybe:

1.- you need to perform a POP authentication first. Select POP from the authentication pull-down menu.


2.- you are using POP authentication rather than ESMTP. Switch to ESMTP from the settings and try again. Once properly authenticated your SMTP server will likely relay all external addresses.


3.- your server doesn't use ESMTP but an allowed Domains/IPs list. The server will not relay any message from a domain or IP not listed in its allowed hosts/IPs list. This happens when you are not connected to the internet through the right service or in the case your server is local, you are not properly listed in the server allowed hosts list (contact the server administrator).

Written by Stanley Roche Busk
for Maxprog, LLC

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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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