Mail sending solutions? | Web Hosting Talk


Hi, I have multiple servers running Ubuntu Plesk with a decent amount of customers.

Currently, I setup Send In Blue (SIB) SMTP for the servers so that customers who send mail using Roundcube don’t go through my own IP but instead go through Send In Blue’s.

This has a couple issues:

1. The DKIM signature is valid but the DKIM domain is sendinblue.com instead of the From Domain, so DMARC is not aligned. This results in an “Unverified” tag when delivering to a Microsoft Exchange address, not delivering at all, or it goes into spam. Gmail is also hit or miss.

2. When it does deliver, Google sees the emails as Promotional because SIB is mostly used for marketing and transactional, not professional email

3. As a result of the way I have it configured, WordPress installations…


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