Outbound Mail Relay README

TZO Outbound Mail Relay (OMR) is a reliable outbound SMTP email relay service which solves email headaches. You may use the OMR service for secure and reliable email access from hotels, conferences, or for working around ISP limitations such as blocked ports. If you are using a network which blocks traffic out on SMTP port 25, you can still connect to OMR using port 2525 or port 465.

Sometimes your ISP will both block outbound SMTP (so you have to use their mailserver), then does not allow you to use your business/website address in your From: address, or the ISP limits your email traffic. With OMR, you solve these issues and you can order the service level which matches your email needs.

If you self-host your own email server, you may have encountered rejected email for vague reasons about failing Reverse DNS or Dynamic IP address. Those sites are saying that - in order to meet their email policies - you must send your email through a mailserver which is hosted on a static IP and which has valid reverse DNS. You can meet those requirements by having your existing mailserver gateway out (or “smart host”) SMTP through OMR.

Your business and your clients might deal with very large artwork or data files. No problem - OMR will handle emails up to 50MB in size.

OMR is intended for normal ("day to day") types of email typical of workgroups, small businesses, personal use and customer contact.

OMR is not intended for software-generated automated responses including those from website applications, including account signup, online petitions, forum new-post notices, or Contact Us forms.

Customer newsletters should use verified opt-in methods, and explicit opt-out instructions on each email. If a recipient you email has bounced because that address is no longer valid, you must remove that address from future emails. These guidelines help avoid reputation or email delivery problems.

It is suggested you subscribe to the various ISP Email Feedback Loop so you can more accurately automatically unsubscribe users who wish this.

OMR is absolutely not for 'introducing' your company or service, and other forms of Unsolicited Bulk Email (UBE). If you need to send email campaigns or 'blasts', please use a service dedicated to that purpose. Use of OMR for Unsolicited Bulk Email (UBE) or spam is forbidden and will result in terminated accounts.

OMR service uses IP-based authentication. What this means is you configure OMR at TZO by specifying your network's Internet IP address. If your network is hosted on a static IP address, you can just update your OMR record in the TZO Control Panel. If your network is hosted on a dynamic IP address, you can automate the IP address updates by installing our TZO update client, TZO Lite.

Configuring OMR on your network/application is very simple – just specify the Outbound SMTP server (or "smart host") to route emails out through omr.tzo.com. The OMR Howto guide contains more details, and links to TZO Tutorials for specific third party email applications.

IMPORTANT: An OMR account can be 'active' or working at only 1 location or network at a time. Do not install the OMR account or TZO Lite software on a mobile system, if you have other stationary computers which always need to access OMR.

Outbound Mail Relay offers several data plans, each plan allowing a specific volume of email (quota units). This usage counter is reset to 0 each day at exactly midnight (US Eastern Time Zone).

For email which is sized 10MB or less, the quota used is simply 1 quota per email recipient, as shown in the table below:

TZO Outbound Mail Relay can send messages up to 50MB in size. Messages larger than 10MB can be sent at the cost of additional quota, as shown in the following table:

Important: Email clients encode files using MIME encoding, which 'expands' message size to approximately 30% larger than on disk. For example, an 8MB email attachment will result in a message size over 10MB. Be aware that it is not common for other mailservers to accept emails larger than 20MB.