From: Alexey Koptsevich (kopts+asg654haboob.atmosp.physics.utoronto.ca)
Date: Fri Jan 06 2006 - 15:39:43 CST

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

>> If my user forwards his mail somewhere and it happens that
>> a) somebody sends him a message from the domain with SPF record,
>> b) the final destination filters mail based on SPF,
>> then it might be that mail for _my_ user will be dropped.
>> My question was not whether SPF is right or wrong, but how
>> can I set up things that mail will be reliably delivered
>> without controlling where my users forward mail and explaining
>> tem what is SPF and how it works.
>
> This is not your problem. The receiving site and SPF publishing site
> have elected to not support mail forwarding. The user who wants his mail

What do you mean by "site"? There are two completely separate entities
here -- site admins/owners and site users. The first one indeed elected
to do something, but I am talking about the second one.

> forward should switch to a provider that does not reject mail based on
> SPF records.

It is easy to switch between free email providers, but if your email
provider is your employer? Most people do not have much control over
their employers.

>> I saw a procmail-based vacation program, I imagine it would be
>> possible to create a loop detection based on its priciple. Say,
>> message IDs for the last 10 min are stored in a database, and
>> if a message with such ID passed through procmail more than 20
>> times in 10 min it gets bounced.
>
> The loops often involve new messages (bounces of bounces of bounces ...)

This is sad...

Thanks,
Alex

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]