vmail | a vim interface for gmail | Text Editor library

I found it! In /etc/postfix/helo_access.pcre, there was this regex pattern:

/.*\.co$/ DISCARD Unauthorized-2015-240

which matched the message in the logs:

Helo command Unauthorized-2015-240

So I added regex to allow that specific domain:

/.*o1.ptr3680.wellable.co$/ OK

then reloaded Postfix and the emails were received upon trying again.

May 8 23:29:38 ubuntusrv dovecot: auth-worker(2848): Error: LDAP: Can't connect to server: ubuntusrv.arm.com:389

Appears you are trying to reach ubuntusrv.arm.com:389. You need to use your Domain Controller and I would suggest you always use TLS (port 636 or 3269). Sometime in the near future, Microsoft Active Directory will require TLS for connections.

Try https://help.ubuntu.com/community/LDAPClientAuthentication

The issue was in your views, you were not rendering the form object properly. try this,

You may consider searching for substring :2, in filenames.

Dovecot: Maildir filename extensions

The standard filename definition is: ":2,". […]
* ,S=: contains the file size. Getting the size from the filename avoids doing a stat(), which may improve the performance. This is especially useful with Maildir++ quota.
* ,W=: contains the file's RFC822.SIZE, ie. the file size with linefeeds being CR+LF characters. […]

Uppercase letters mark "standard flags", lowercase letters mean "local/user flags".

1. Try to connect to MariaDB using credentials from the file:

# mysql -upostfix_user -p

Or with localhost IP address:

# mysql -h 127.0.0.1 -upostfix_user -p

If the connection is possible only when the IP address is specified, you can simply change hosts = localhost to hosts = 127.0.0.1 in virtual_alias_maps.cf.

If it fails both ways, the password may be incorrect. Use the following query to reset it in MariaDB:

You could use rclone sync, check out https://rclone.org/commands/rclone_sync/

Doesn’t transfer unchanged files, testing by size and modification time or MD5SUM. Destination is updated to match source, including deleting files if necessary.

You need to use the file module, more information on Ansible file module documentation

The example from there :

The Django docs explain this very well. It's what is known as a ModelForm:

If you’re building a database-driven app, chances are you’ll have forms that map closely to Django models. For instance, you might have a BlogComment model, and you want to create a form that lets people submit comments. In this case, it would be redundant to define the field types in your form, because you’ve already defined the fields in your model. For this reason, Django provides a helper class that lets you create a Form class from a Django model.

So, to answer your question, your method uses a regular form (forms.Form) where you define the form fields, perform validation and then save each field individually in your view. When using form.ModelForm, field validation and saving is taken care of for you. Seeing as you have already defined what your fields are, the ModelForm uses this to perform the validation. The save() method conveniently saves each field to the database.

You're calling .next() twice in your body. .next() gets the next element from the current position of the List and repositions. Only call .next() once within the loop. Set that to a variable. Or you're getting the next, and then the next, and then the next, without a check in between about whether or not you've reached the end of the List. Which is what's causing the error.