cannot send email from Postfix to gmail
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@scottalanmiller said:
You just need to add the DNS servers to the /etc/resolv.conf file.
i already add DNS servers (8.8.4.4 and 8.8.8.8) on my centos box, and you can see in the above image i can ping google.com, so there is no issue in my DNS setting
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Ping doesn't tell you that. Use nslookup and see what the result of this is...
nslookup smtp.google.com -
@IT-ADMIN said:
i already add DNS servers (8.8.4.4 and 8.8.8.8) on my centos box, and you can see in the above image i can ping google.com, so there is no issue in my DNS setting
No, smtp.google.com is not google.com. You have a DNS problem.
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what can i understand from the above result ??
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my DNS setting are :
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@IT-ADMIN said:
That means that you can't look up smtp.google.com. Most likely because your DNS is being hijacked. This is why we don't use ping to test DNS.
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@IT-ADMIN said:
my DNS setting are :
We can tell from the nslookup that you hit the right DNS server (8.8.8.8) but what we can't tell is why smtp.google.com does not exist for it. BUT if I look smtp.google.com up from here in Panama, Google DNS tells me that it does not exist either. Are you sure that the name is correct?
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@scottalanmiller said:
BUT if I look smtp.google.com up from here in Panama, Google DNS tells me that it does not exist either. Are you sure that the name is correct?
Bingo!
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@scottalanmiller said:
We can tell from the nslookup that you hit the right DNS server (8.8.8.8) but what we can't tell is why smtp.google.com does not exist for it. BUT if I look smtp.google.com up from here in Panama, Google DNS tells me that it does not exist either. Are you sure that the name is correct?
the name of what ???
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@IT-ADMIN said:
the name of what ???
The server that you are trying to reach. The only name you have here: smtp.google.com
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Google suggests that you use this name: smtp-relay.gmail.com
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@scottalanmiller said:
Google suggests that you use this name: smtp-relay.gmail.com
That is specific to Google Apps. I thought he was using a personal Gmail account. That would be smtp.gmail.com
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Oh okay, I must have misread it.
So just change google to gmail.
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If he is trying to send an email to gmail... he should be sble to use the smtp-relay.gmail.com
That is their primary incoming MX record....
#dig mx gmail.com
gmail.com. 3599 IN MX 40 alt4.gmail-smtp-in.l.google.com.
gmail.com. 3599 IN MX 30 alt3.gmail-smtp-in.l.google.com.
gmail.com. 3599 IN MX 10 alt1.gmail-smtp-in.l.google.com.
gmail.com. 3599 IN MX 5 gmail-smtp-in.l.google.com.
gmail.com. 3599 IN MX 20 alt2.gmail-smtp-in.l.google.com.#nslookup smtp-relay.gmail.com
Non-authoritative answer:
smtp-relay.gmail.com canonical name = gmail-smtp-relay.l.google.com.
Name: ** gmail-smtp-relay.l.google.com**
Address: 74.125.193.28 -
as for the name i think it is correct cuz i'm using my personel gmail account, i fount that name on many howto articles , all of them mention this name smtp.google.com
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@IT-ADMIN said:
as for the name i think it is correct cuz i'm using my personel gmail account, i fount that name on many howto articles , all of them mention this name smtp.google.com
Maybe that used to be okay, maybe they are all typos. But Google says it is wrong and it is Google you are trying to connect to, so I'd listen to Google here.
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@IT-ADMIN said:
as for the name i think it is correct cuz i'm using my personel gmail account, i fount that name on many howto articles , all of them mention this name smtp.google.com
Don't read a how to. Read the official instructions first. then read a how to if you cannot figure it out.
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i change smtp.google.com to smtp-relay.gmail.com and i get in the log the following
