I have two MIAB servers on two different hosting companies. One works perfect all the time. The other (server.gethealthymarket.com) however, has recently started kicking back emails the following errors:
server.gethealthymarket.com[184.108.40.206] said: 554 5.7.1 Service
unavailable; Client host [220.127.116.11] blocked using zen.spamhaus.org (in
reply to RCPT TO command)
But nothing is black listed at spamhaus.
Also, sometimes, when I try to send from the emails address i get:
SMTP Error (554): Failed to add recipient “firstname.lastname@example.org” (5.7.1 Service unavailable; Sender address [email@example.com] blocked using dbl.spamhaus.org; Error: open resolver; DNSBL Error Code - Open/public resolver - The Spamhaus Project).
Also, I get block notices for various domains on my server but their not blacklisted at spamhaus.
This domain is listed in the Spamhaus Domain Block List (code 127.255.255.254), which may prevent recipients from receiving your mail. See http://www.spamhaus.org/dbl/ and http://www.spamhaus.org/query/domain/maxquattro.com.
I’m at a loss to understand why this is occurring. Sometimes, when i reboot the server.gethealthlymarket.com the errors will clear both ways, only to come back a few minutes/hours later. Neither of these server are heavy traffic and both resolve to themselves as far as DNS. Any help anyone can provide will be greatly appreciated!