Outgoing mail on port 25 is blocked on our network. This is done to prevent abuse of our network.
To send e-mail you can use any transactional e-mail service or make use of our SMTP relay service. This service will block outgoing spam messages thus still protects our network from abuse.
The address of our SMTP smarthost is: smtprelay.(ip adres).com
Our SMTP server accepts mail from any server within our IP space without authentication.
SPF
Include:relay.mailchannels.net
Example:
yourdomain.com IN TXT "v=spf1 a mx include:relay.mailchannels.net ?all"
DKIM
Our SMTP server can't sign your mail but will let your signed messages through. Just setup DKIM on your side and sign the messages and we will pass the DKIM headers through.
