Hetzner Africa informed their clients of the following changes to their Outgoing email policy from 5 July 2016.
Below is the full text of their email:
This email serves as a reminder that we will be changing our outgoing email policy as communicated on 8 June 2016. In an effort to stop spam from leaving our network, we make use of SpamExperts, a leading international email security service, for all outgoing mail. This minimises the risk of our email servers being blacklisted. This outgoing email policy only applies to Web Hosting and Managed Dedicated server customers.
With this update, starting on Tuesday, 5 July 2016, you may be affected in the following ways (please forward this onto your web developer for further action):
1.Should you send an email from an email address that doesn’t contain your domain name (for either the ‘from’ field or the ‘reply to’ field), and this email bounces, it will bounce back to your webmaster@ mailbox. For this reason, please ensure that a webmaster mailbox exists. This is particularly relevant if your email software does automatic bounce monitoring.
2.If your website sends email (i.e. mails generated by feedback forms, contact us forms and other email sending mechanisms on your website), your web developer must follow the below guidelines in order to ensure that these emails are successfully sent:
•If the date in the email header is too far in the past or the future, the email will be rejected and bounced back to the sender.
•If the email contains more than one of the same header types, eg. multiple ‘From:’ headers, the email will be rejected and bounced to the sender.
•If the email body contains more than 998 characters in a single line ie. without a line break, the email will be rejected and bounced to the sender.