maddy

 1# Implementation quirks
 2
 3This page documents unusual behavior of the maddy protocols implementations.
 4Some of these problems break standards, some don't but still can hurt
 5interoperability.
 6
 7## SMTP
 8
 9- `for` field is never included in the `Received` header field.
10
11  This is allowed by [RFC 2821].
12
13## IMAP
14
15### `sql`
16
17- `\Recent` flag is not reset in all cases.
18
19  This _does not_ break [RFC 3501]. Clients relying on it will work (much) less
20  efficiently.
21
22[RFC 2821]: https://tools.ietf.org/html/rfc2821
23[RFC 3501]: https://tools.ietf.org/html/rfc3501