Free Backup MX service

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Free Backup MX service

Postby Golbez » Mon Dec 06, 2010 5:27 pm

I was just wondering about the free Backup MX service. I see the current hard limit is set at 10Mb per day of transfer, but there is no data storage with a free account. So... if my primary mail server goes down, and rollernet has to take over, since I have a free account and while my mail is being stored on their servers, will it just automatically reject the emails because I have no storage limit? If that's the case, why even bother to offer Backup MX to a free account? Just curious as to how this works with a free account. Honestly I probably won't ever go over 10Mb per day since my primary server is up 24/7/365 on FiOS and probably maxes out at maybe 10Mb of mail traffic per day, but there is always the possibility of the power going out or possibly a FiOS outage.
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Re: Free Backup MX service

Postby Seth » Mon Dec 06, 2010 6:22 pm

What we call "storage" is not related to queued mail, which is effectively unlimited*. Data storage is persistent storage for your Roller Network account. Hosted mail boxes are counted as part of the data storage allowance. The mail queue for services such as Secondary MX is not.

* Where "unlimited" means we don't track the mail queue, not that our hard drives are infinite. If someone abuses the privilege and pushes the spool to capacity, we will act on it.
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Re: Free Backup MX service

Postby Golbez » Tue Dec 07, 2010 5:28 am

Ahh cool ok. I assume I'm still stuck at 10Mb per day for transfer, so not like I could abuse much anyway. :P I just run a family web server and host a few domains for a few other techy friends, nothing commercial related, so sounds like this is perfect for me. Thanks for the service. :)
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Re: Free Backup MX service

Postby RackDaddy » Sat Sep 01, 2012 1:03 am

I'm setting up Rollernet as a Secondary MX for one of my domains. I've been consulting the help document at https://acc.rollernet.us/help/mail/index.php#mail but am a little confused.

Important: our servers must never be listed as the lowest priority (final) MX in DNS when a mail domain is in Secondary MX mode. If they are, a "loops back to self" error will occur and queued mail will be lost unless Mail Mirror was enabled.


Further down the page it states:

Roller Network as a Secondary MX:

example.com IN MX 0 yourserver.example.com
example.com IN MX 5 mail.rollernet.us
example.com IN MX 5 mail2.rollernet.us


Isn't this information contradictory? When using Rollernet as the Secondary MX, shouldn't it be the two mail.rollernet.us as 0 priority and the "regular" server as 5?
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Re: Free Backup MX service

Postby RackDaddy » Sat Sep 01, 2012 5:42 am

I think I answered my own question based upon this Wikipedia reference:

According to RFC 5321, the lowest-numbered records are the most preferred.[3] This phrasing can be confusing, and so the preference number is sometimes referred to as the distance: smaller distances are more preferable. An older RFC, RFC 974, indicates that when the preference numbers are the same for two servers, they have the same priority, hence those two terms are used interchangeably.
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Re: Free Backup MX service

Postby Seth » Sun Sep 02, 2012 3:15 pm

RackDaddy wrote:I'm setting up Rollernet as a Secondary MX for one of my domains. I've been consulting the help document at https://acc.rollernet.us/help/mail/index.php#mail but am a little confused.

Important: our servers must never be listed as the lowest priority (final) MX in DNS when a mail domain is in Secondary MX mode. If they are, a "loops back to self" error will occur and queued mail will be lost unless Mail Mirror was enabled.


Further down the page it states:

Roller Network as a Secondary MX:

example.com IN MX 0 yourserver.example.com
example.com IN MX 5 mail.rollernet.us
example.com IN MX 5 mail2.rollernet.us


Isn't this information contradictory? When using Rollernet as the Secondary MX, shouldn't it be the two mail.rollernet.us as 0 priority and the "regular" server as 5?


No, the documentation is correct. MX 0 is a lower priority than 5.
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Re: Free Backup MX service

Postby chal4oye » Fri Jan 03, 2014 10:53 pm

The lowest-numbered records are the most preferred.[3] This phrasing can be confusing, and so the preference number is sometimes referred to as the distance: smaller distances are more preferable. An older RFC, RFC 974, indicates that when the preference numbers are the same for two servers, they have the same priority, hence those two terms are used interchangeably.
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