maildir | A go package to access Maildir mailboxes | Email 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.

> is not syntactically a valid header character, so I doubt you can persuade formail to treat it as one.

Try writing a simple sed or Awk script to escape it instead.

If the >From is always the first line of each file, try

No, you can't override Maildir's filename format, not least because it's prescribed to be in a particular way for interoperability reasons. The format is guaranteed to be robust against clashes when multiple agents on multiple hosts concurrently write to the same message store. This can only work correctly if they all play by the same rules. An obvious part of those rules is the one which dictates that the host name where the agent is running must be included in the filename of each new message.

The Wikipedia Maildir article has a good overview of the format's design and history, and of course links to authoritative standards and other primary sources.

If you don't particularly require Maildir compatibility (with the tmp / new / cur subdirectories etc) you can simply create a unique mbox file on each run; if you can guarantee that it is unique, you don't need locking when you write to it.

For example, if you have a tool called uuid which generates a guaranteed unique identifier on each invocation, you can use that as the file name easily;

The syntax for the "from" address is incorrect:

$mail->setFrom('no-reply at example dot com', 'website registration');

you need to use a valid email address, such as:

aiosmtpd is SMTP server. SMTP protocol is used to send, relay or forward messages, but you cannot use it to receive messages. You would need to combine your mailbox application with some implementation of IMAP or POP3.

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:

"git am" can apply patches that were emailed to you. The patches can be generated using format-patch. When you receive patch emails, they can be stored as a single text file mbox or each email stored as a separate file in a directory mdir.

If you want to do all calculations in aggregate query, you can use $facet and $group stages as below