recently I've encountered a strange issue when sending mass mailings by CiviMail. E.g. I have a mail list of 100 people and I send them a newsletter. Later, in the mailing summary, I can see how many people received the mail and how many emails bounced. Due to the issue I am seeing:
- Intended recipients 78 - Mailings delivered 74 (94.87%) - Transmission 0 - Answers 0 - Rejections 0 (0.00%) - Requests for discharge 0 (0.00%) - Requests for resignation 0 (0.00%)
As you can see, I had 78 recipients of this mailing but only 74 received the message. I've traced those 4 recipients (I've created groups based on the Intended recipients and delivered mailings and looked for those 4 recipients) - but when I've tried to send the mail to those 4, the mail status is finished but the mailing summary states:
- Intended recipients 4 - Mailings delivered 0 (0.00%) - Transmission 0 - Answers 0 - Rejections 0 (0.00%) - Requests for discharge 0 (0.00%) - Requests for resignation 0 (0.00%)
I can't find out why the system is not allowing me to send those mailings. The logs are empty. I'm on Drupal 7.69, CiviCRM 5.20 and I'm using PHPMailer + Mosaico.
Has anyone encountered this kind of issue?