Ensuring Passle can send emails to your users
'Allow listing', helps ensure Passle can send emails to your users
If your company uses Mimecast or other email security services to filter out spam, phishing or similar content, you might find that emails sent from Passle are sometimes not received. This happens when emails appear to originate from a new or unknown source and can result in emails being 'quarantined'.
To resolve this issue, your email service can be configured to "allow list" Passle as a permitted sender.
Exactly how you configure the software or service can vary depending on the provider you use, making it difficult to provide general instructions however, this page aims to provide you with the technical information we believe you will need. Your IT team will know what to do with this information, but if there are any additional queries, please do contact us.
Most filters work on "From" or "Sender" addresses, if your internal network blocks your users from receiving email from certain domains, or re-routes emails from those domains to a spam folder, then please ensure the following domains (including all subdomains) are allowed:-
- passle.net
- *.passle.net
Our SMTP Server (from which outbound emails are sent), IP addresses are,
- 50.31.156.96/27 (50.31.156.96 - 127)
- 104.245.209.192/26 (104.245.209.192 - 255)
- 50.31.205.0/24 (50.31.205.1 - 255)
If you need any further information, please get in touch via support@passle.net and we will do our best to help make sure you have everything you need to ensure reliable delivery of your emails and access to Passle domains.