Hello,
This is just to inform you that 1&1 now refuses to interact with mail servers using the following DNS configuration:
say the MX record points to mail.domain.tld
if the record for mail.domain.tld is a CNAME record rather than an A record, 1&1 will refuse to accept mail from or deliver to your server!!
i discovered this because a client of mine receives the following error messages when communicating with a domain hosted on 1&1:
550-Requested action not taken: mailbox unavailable
550 invalid DNS MX or A/AAAA resource record
see this post, which seems to confirm:
- Removed -
Has anyone else seen this behavior?
if this is going to be a new trend, please note that cPanel, by default, has the MX record point to a CNAME record rather than an A record..
This is just to inform you that 1&1 now refuses to interact with mail servers using the following DNS configuration:
say the MX record points to mail.domain.tld
if the record for mail.domain.tld is a CNAME record rather than an A record, 1&1 will refuse to accept mail from or deliver to your server!!
i discovered this because a client of mine receives the following error messages when communicating with a domain hosted on 1&1:
550-Requested action not taken: mailbox unavailable
550 invalid DNS MX or A/AAAA resource record
see this post, which seems to confirm:
- Removed -
Has anyone else seen this behavior?
if this is going to be a new trend, please note that cPanel, by default, has the MX record point to a CNAME record rather than an A record..
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