Thank you for that.
I flushed my DNS using sudo killall -HUP mDNSResponder
SMTP server: turner.aserv.co.za
Do you mean set DNS to 1.1.1.1 and 8.8.8.8 on the router?
I use Outlook and Spark as a mail client set up for IMAP. I have a Vodacom 10Mbps Fibre in my rental apartment. When I send mail, it takes almost 30-45 seconds before the mail leaves my outbox. When I use any other ISP, Telkom, Rain, for example, the mail leaves the mailbox immediately.
What...