smtp

Hello, New 3CX user here. I've set up iptables as best I can by adding the relevant FQDN and IPs to the whitelist. I'm having difficulty connecting to Gmail while iptables is enable, despite allowing port 587 and adding smtp.gmail.com to the whitelist. It's probably a total newbie mistake, but...

Let’s face it. As the number of Internet service providers blocking downstream email servers continues to proliferate, getting a reliable email server configured with Incredible PBX™ and other VoIP servers has become painful. If you’re new to all of this, here’s the simple explanation. Internet...

Background: Emails sent from Incredible PBX would transmit but wind up in junk mail while using the default sendmail configuration. Sparkpost is my preferred SMTP relay but I had no success getting it to function with sendmail following instruction sets published for other relays like Gmail...

Either something got munged or I just don't have it set right. The "Instruction Manual" says to edit the sendmail.cf file and add my ISP's SMTP server after the "DS". (The sendmail.cf file incidentally warns to not edit it directly!) Well, that aint working. You have new mail in...