> On May 21, 2022, at 4:26 PM, Wietse Venema <wie...@porcupine.org> wrote:
> 
> Yes, you ave a mailer loop.
> 
> mx1 Receive 7B34152BBDB (2326 bytes) from macbook
> mx1 Deliver 7B34152BBDB to content filter, receive as B8C5452BBDF (4004 
> bytes).
> mx1 Deliver B8C5452BBDF to cmx01 as 4L4tdt0Fk8z2SSLv
> 
> cmx01 Receive 4L4tdt0Fk8z2SSLv (4998 bytes) from localhost which was sent to 
> 8.10.12.14.
> cmx01 Deliver 4L4tdt0Fk8z2SSLv to NON-POSTFIX SMTP SERVER with UNKNOWN QUEUE 
> ID.
> 
> There is no logging how the non-postfix smtp server received the message.
> There is no logging how the non-postfix mta forwarded the message to mx1.

All MTAs involved is postfix.  The ciphermail stuff is just basically filters 
on top of postfix to encrypt an incoming email if a gpg key exists for the 
recipient.


> 
> mx1 receive 7C32952BBDB (4155 bytes) from cmx01 (NOTE MESSAGE HAS SHRUNK)
> mx1 deliver 7C32952BBDB to content filter, receive as 5918E52BBDF (5537 bytes)
> mx1 Deliver 5918E52BBDF to cmx01 as 4L4tdy3tg5z2SSLv
> 
> cm01 receive 4L4tdy3tg5z2SSLv (6531 bytes) from localhost which was sent to 
> 8.10.12.14
> cmx01 Deliver 4L4tdy3tg5z2SSLv to NON-POSTFIX SMTP SERVER with UNKNOWN QUEUE 
> ID.
> 
> And so on.
> 
> Where should the message be stored? Then THAT MTA should be configured
> to store email for the recipient.

client -> ciphermail (gpg or not?) -> final MTA where the user retrieves mail 
via imap.  All postfix.


> 
> If the problem is with the non-Postfix Postfix MTA, then I can't
> make specific recommendations, other that "don't do what you're
> doing now."
> 
> If the problem is with one of the Postfix MTAs, then look at
> https://www.postfix.org/ADDRESS_CLASS_README.html#classes and
> configure the recipient's domain in the appropriate address class
> (local domain class, virtual alias domain class, or virtual mailbox
> domain class).

I’ll take a look at this doc.  Thank you.  I feel like if I simple drop mail 
matching domain *.compute.amazonaws.com or even the fqdn of the aws instance, 
that would be enough to break the chain, but I’m not exactly sure how to do 
that.

> 
>       Wietse

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