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Hello,
I guess my question has been asked before but after a long search I couldn't find a solution that solves my problem.
3 or 4 months ago I have switched a domain from the servers default 1. IP to the (till then) unused 2. IP. So far so good.
Now my customer has (the first time) a problem sending mails to a special address. Error-Msg: "550 [1. server domain] is not allowed to send mail from [customer domain]"
I read that Plesk (qmail/postfix) sends every mail over the main IP-address of the server and I have to allow that via DNS configuration. But I found different answers of what I should do. Some say that I have to customize the SPF-entry, some say that there has to be an mx-entry for both IP-adresses...
So I configured the following DNS entries:
[customer domain]. ___ A ___ [2. IP]
mail.[customer domain]. ___ A ___ [2. IP]
mail2.[customer domain]. ___ A ___ [1. IP]
[customer domain]. ___ MX (10) ___ mail.[customer domain].
[customer domain]. ___ MX (20) ___ mail2.[customer domain].
[customer domain]. ___ TXT ___ v=spf1 +mx +a ip4:[1. IP] ip4:[2. IP] -all
(Also a few other default-entries)
mxtoolbox mx-check says that everything is allright:
SMTP Reverse Banner Check ___ OK - [2. IP] resolves to [server-id].stratoserver.net
SMTP Reverse DNS Mismatch ___ OK - Reverse DNS matches SMTP Banner
SMTP TLS ___ OK - Supports TLS.
SMTP Connection Time ___ 0.328 seconds - Good on Connection time
SMTP Open Relay ___ OK - Not an open relay.
SMTP Transaction Time ___ 1.154 seconds - Good on Transaction Time
But the mail to the special mail-address still throws the same error - also after a few hours after my last DNS-edit.
BTW: Our server is the primary DNS for the domain and there are Reverse-DNS-Entries for both IPs to the server.
Can anyone please help me out of this? What did I do wrong? Is there a tool online to test these settings so that I don't have to send a testmail?
Best regards,
Steffen
P.S.: I have also read that there is a way to patch qmail to use the IP configured for the domain to send mails but if possible I would like to avoid "hacking" around - the server runs well, there is only this one customer running on the 2. IP and till now they have only problems with this one mail-recipient. So I would prefere finding an easy solution.
I guess my question has been asked before but after a long search I couldn't find a solution that solves my problem.
3 or 4 months ago I have switched a domain from the servers default 1. IP to the (till then) unused 2. IP. So far so good.
Now my customer has (the first time) a problem sending mails to a special address. Error-Msg: "550 [1. server domain] is not allowed to send mail from [customer domain]"
I read that Plesk (qmail/postfix) sends every mail over the main IP-address of the server and I have to allow that via DNS configuration. But I found different answers of what I should do. Some say that I have to customize the SPF-entry, some say that there has to be an mx-entry for both IP-adresses...
So I configured the following DNS entries:
[customer domain]. ___ A ___ [2. IP]
mail.[customer domain]. ___ A ___ [2. IP]
mail2.[customer domain]. ___ A ___ [1. IP]
[customer domain]. ___ MX (10) ___ mail.[customer domain].
[customer domain]. ___ MX (20) ___ mail2.[customer domain].
[customer domain]. ___ TXT ___ v=spf1 +mx +a ip4:[1. IP] ip4:[2. IP] -all
(Also a few other default-entries)
mxtoolbox mx-check says that everything is allright:
SMTP Reverse Banner Check ___ OK - [2. IP] resolves to [server-id].stratoserver.net
SMTP Reverse DNS Mismatch ___ OK - Reverse DNS matches SMTP Banner
SMTP TLS ___ OK - Supports TLS.
SMTP Connection Time ___ 0.328 seconds - Good on Connection time
SMTP Open Relay ___ OK - Not an open relay.
SMTP Transaction Time ___ 1.154 seconds - Good on Transaction Time
But the mail to the special mail-address still throws the same error - also after a few hours after my last DNS-edit.
BTW: Our server is the primary DNS for the domain and there are Reverse-DNS-Entries for both IPs to the server.
Can anyone please help me out of this? What did I do wrong? Is there a tool online to test these settings so that I don't have to send a testmail?
Best regards,
Steffen
P.S.: I have also read that there is a way to patch qmail to use the IP configured for the domain to send mails but if possible I would like to avoid "hacking" around - the server runs well, there is only this one customer running on the 2. IP and till now they have only problems with this one mail-recipient. So I would prefere finding an easy solution.
