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I am quite new to django-rest-framework. I am trying to combine the examples infinite-depth nesting and hyperlinks for nested resources in drf-nested-routers

I added a MailReply object just to try the infinite-depth nesting. When i try to access recipients it gives me this AttributeError.

Hope someone can help me:

I have many sites running on my server and I am using mariadb. when I do:

I setup a mailserver with a couple different tutorials of Postfix and Dovecot. None of them seemed to actually work 100%. I did get it working with IMAP with SSL on 993 and SMTP with StartTLS on 465. However, mxtoolbox said this might be an open relay.

I wanted to get rid of this error so I added in some smtp restrictions. It gets rid of the error, but now I cannot send via mail clients.

It just sits on sending for a long time and then times out. I pulled the restrictions off of a question here, including fixes to the tutorials to get it working before.

Here is the master.cf:

I have followed this tutorial to configure DKIM and Postfix on Debian 7 wheezy. These instructions are pretty much a standard on the interwebz.

I am using Gmail to send and receive emails using my own domain. I followed this instructions to achieve that.

My problem

I can send and receive emails but I can't manage to pass the DKIM test (at least with Gmail). After searching and struggling for a while I have come to the conclusion that the reason of my woes is that my message is getting multiple DKIM signatures (see mail.log below). And this, according to the DKIM directives is enough for the DKIM to fail.

But after reading about on how to solve the multiple signatures problem I found that absolutely all of these solutions refer to having 'amavis' installed. Thing is...I don't have it installed!

In any case these solutions mention changing postfix configurations related to the milters in master.cnf and/or main.cfn. For example, adding this to the 'receive_override_options' (again, I don't have that variable since I don't have amavis installed) should solve the issue:

I have the really complex array:

First of all, sorry if this is a long post, I'm trying here to gather all the informations (I can recall) that people on other forums seemed to find important.

Secondly I apologize if the answer to this post happened to be "obvious", but to make it simple I have absolutly no idea what I'm doing, this is the first time I try to do this.

I'm trying to send mails with PHP mail(), but it fails every time when I do it at home even though it works just fine at my school (I use PHP7 both at school and at home, so I'm guessing it comes from my server configuration at home).

I've tried many tutorials requesting to update this file and that other file, none of which seemed to have any positive impact on the result, so here's what I did so far:

I am using OpenLDAP and I store my users under ou=users,ou=developers,o=orga,dc=domain,dc=com

Each user have a mail attribute which is used by application that use the LDAP for authentication.

I also have a postfix mail server that I configured for using ldap. I store my email under dc=mailAccount,dc=domain.com,dc=mail,dc=domain,dc=com

I am now not able to set the real email in my user because the cn of the email is unique.

I'm trying to figure out how to send my credentials to Gmail. RFC5034 gives an example

I am setting up squirrelmail to access it from anywhere from internet. I have installe postfix and dovecot on ubuntu 16.04. I am able to send mail to someone@gmail.com from me@mydomain.com with ms-outlook on my desktop. but when I try it from https://squirrelmail.mydomain.com I get