Overview All spam filtering systems make mistakes from time to time. When a spam message is delivered instead of being blocked, this is described as a false negative. A false positive is the reverse — when the system blocks a legitimate m...
MailChannels is our SMTP relay, which relays all outbound messages through an external SPAM filter. In the cases where a message is rejected / bounced, you would receive a bounce message back to the sender mailbox. MailChannels Insights...
All of our mail is routed through a premium delivery service called ‘MailChannels’. As such, the SPF records need to indicate this to ensure accurate delivery. Correct Sender Policy Framework (SPF) records need to be configured in your DN...
The Short Answer MailChannels Outbound Filtering is an SMTP relay service that identifies spammers within your network to improve your email reputation and ensure reliable email delivery for your users. With MailChannels Outbound Filteri...
This page is designed to assist those users getting the following error message within their email 550 This message was classified as SPAM and may not be delivered Common solutions to the error Solution #1 – Enable SMTP Authentication i...
SMTP error from remote mail server after RCPT TO:: host domain.com [xx.xx.xx.xx]: 550-Please turn on SMTP Authentication in your mail client. 550-(mail.server.net) [xxx.xxx.xxx.xxx]:36825 is not permitted to relay through 550 this server w...
Most email service providers use complex anti-spam filters. These filters usually determine which email is SPAM based on their experience and practices. Some of the most common reason for emails to end up as SPAM are: The originating doma...
We have decided to disable the mail function because the mail() function was often used by malicious users on our network to send spam and other unsolicited e-mails. This is to protect the reputation of our IP addresses / network, and to...
Why use SMTP instead of PHPMail()? By default, PHP applications will send emails using a protocol called ‘PHPMail()’, which has a number of disadvantages and in many cases leads to the email hitting the SPAM folder of the recipient. PHP m...
