Postmaster
Delivery errors, SMTP issues and mailbox-provider enquiries.
postmaster@0tax.co
Mail infrastructure operational
Professional and secure email infrastructure.
This site provides postmaster, abuse, security and delivery information for the email infrastructure operating under mail.0tax.co.
Mail infrastructure
Technical information for mailbox providers, recipients, blocklist operators and mail administrators.
Server identity
Server hostname
mail.0tax.co
Primary sending IP
102.22.210.168
Transport security
TLS enabled
Authentication
SPF, DKIM and DMARC
Services
SMTP
Operational
Submission
Operational
IMAPS
Operational
Webmail
Operational
SPF
Published
DKIM
Enabled
DMARC
Published
TLS
Enabled
Operational contacts
Use the appropriate address so your report reaches the correct operational team.
Abuse desk
Spam, phishing, malware or misuse originating from our infrastructure.
abuse@0tax.coSecurity team
Responsible disclosure and infrastructure security reports.
security@0tax.coMessaging policy
Our infrastructure is operated for legitimate business and permission-based communications.
Permitted use
- Business correspondence
- Customer support communications
- Transactional and account-related messages
- Permission-based communications
Prohibited use
- Unsolicited bulk email
- Phishing or deceptive communications
- Malware distribution
- Unauthorized or unlawful activity
Complaint handling
Complaints are investigated promptly. Confirmed abusive activity may result in immediate suspension or termination of the responsible account or service.
List management
Permission-based senders are expected to honor unsubscribe requests, process bounces and maintain appropriate suppression lists.
Reporting a delivery or abuse issue
To help us investigate efficiently, include as much of the following information as possible.
Sending IP address and domain
Date and time in UTC
SMTP bounce or block message
Relevant message headers
Recipient or mailbox provider
Steps already taken to resolve the issue