Dev {Tricks}

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SPF/DKIM/DMARC Tools

SPF/DKIM/DMARC deployment tools fall into 2 categories: generators (creators/builders) to generate records and checkers (validators/testers) to look up the DNS.

SPF Tools

To create/generate an SPF record, there is the SPF record generator, or SPF record creator/builder, which takes these mechanisms and qualifiers: mx, a, ip4, ip6, include, and all, and returns an SPF record.

To check an SPF record, there is the SPF record checker, or SPF record validator/tester, which checks if an SPF record is published on your domain, and if its syntax is correct.

DKIM Tools

To create/generate a DKIM record, there is the DKIM record generator, or DKIM record creator/builder, which takes a domain and a selector, and returns a DKIM record.

To check a DKIM record, there is the DKIM record checker, or DKIM record validator/tester, which checks if a DKIM record is published on your domain, and if its syntax is correct.

DMARC Tools

To create/generate a DMARC record, there is the DMARC record generator, or DMARC record creator/builder, which takes these tags: p, rua, ruf, sp, adkim, and aspf, and returns a DMARC record.

To check a DMARC record, there is the DMARC record checker, or DMARC record validator/tester, which checks if a DMARC record is published on your domain, and if its syntax is correct.

Learn More

SPF/DKIM/DMARC Wizard

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Missing vmail Folders .Sent, .Trash, .Drafts, .Junk, and Other

  • Missing Sent, Trash, Drafts, Junk, and Other Folders

Solution: Check whether the dot files are hidden. Make the dot files to show.

Horde

  • Click on the Folder Actions option.
  • Choose the Rebuild Folder List option.
  • Then choose the Show All Mailboxes option.

Roundcube

  • Go to Settings.
  • Click Folders.
  • Re-subscribe to each folder by clicking the check box.

Windows Mail

  • Click IMAP Folders.
  • In the Show/Hide IMAP Folders dialog box, select a folder.
  • Click Show.

Thunderbird

  • In the Folder pane, look for IMAP mail and right-click on it.
  • Go to Settings, click on Server Settings, then select Advanced.
  • Remove the checkmark on Show only Subscribed folders.
  • Click OK.

Microsoft Outlook Express

  • Under Folders on the left side of the screen, select the inbox for your email (NOT the one under Local Folders).
  • Click the Tools menu, then select IMAP Folders.
  • Select the desired folder(s).
  • Click Show.
  • Click OK.

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OJS Email Sending Problem

  • There was a problem sending an email message. Please try again later, or contact your system administrator.

At first, check whether Principal Contact details were added in Journal. Then go for Step One.

Step One

Turn on SMTP in config.php

[email]

; Use SMTP for sending mail instead of mail()
 smtp = On

; SMTP server settings
 smtp_server = mail.example.com
 smtp_port = 25

; Enable SMTP authentication
; Supported smtp_auth: ssl, tls (see PHPMailer SMTPSecure)
 smtp_auth = ssl
 smtp_username = username
 smtp_password = password
;

You contact hosting provider to get the SMTP details

NB: If the above setting does not work anyway, then go for adding envelop sender.

Step Two

Allow envelop sender

; Allow envelope sender to be specified
; (may not be possible with some server configurations)
 allow_envelope_sender = On

; Default envelope sender to use if none is specified elsewhere
 default_envelope_sender = my_address@my_host.com

; Force the default envelope sender (if present)
; This is useful if setting up a site-wide no-reply address
; The reply-to field will be set with the reply-to or from address.
 force_default_envelope_sender = On

Make sure to match the domain in your default_envelope_sender with the domain of OJS installation. If it doesn’t match this increases the spam rating.

 

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Postfix Mail Queue

Postfix Mail Queue Management

To view the number of emails in the Postfix mail queue

mailq

Postfix delete mail queue: postsuper command

To delete all emails in the queue

postsuper -d ALL

To remove all mails in the deferred queue

postsuper -d ALL deferred

To remove a particular mail from the queue

postsuper -d mail_id

To remove messages from a particular domain.

mailq | grep xdomain.com | awk {'print $1'} | xargs -I{} postsuper -d {}

To remove all mails from a particular mail id

mailq | tail +2 | awk 'BEGIN { RS = "" } / testmail@xdomain\.com$/ { print $1 }' | tr -d '*!' | postsuper -d -

To remove all mails which have testmail@xdomain.com in the entire mail.

for id in `postqueue -p|grep '^[A-Z0-9]'|cut -f1 -d' '|sed 's/*//g'`; do postcat -q $id | grep testmail@domain.com && postsuper -d $id; done

To remove all mails which have a particular pattern like “.de”

for id in `postqueue -p|grep '^[A-Z0-9]'|cut -f1 -d' '|sed 's/*//g'`; do postcat -q $id | grep “.de” && postsuper -d $id; done

Postfix queue structure

/var/spool/postfix/maildrop
/var/spool/postfix/hold
/var/spool/postfix/incoming
/var/spool/postfix/active
/var/spool/postfix/deferred
/var/spool/postfix/corrupt

Display the list of Queued mails , deferred mails, and Pending mails

postqueue -p

To Display the mail header and contents

postcat -q “Queue ID”

To check the total number of mails in the queue

postqueue -p | grep -c "^[A-Z0-9]"

To attempt to send one particular mail

postqueue -i “Queue ID”

Force mails on Postfix
To reattempt delivery of all mails in the queue

postqueue -f