cannot send mails to yahoo, hotmail and gmail

dear all, I have a list using mailman. It cannot send mails to yahoo, hotmail and gmail. I check all setting in the mailman, but I still cannot find the problem yet. Please help me if someone who ever experience like this.
I am looking forward to a favorable reply from you. Thank you.
regards, Eko

On 09/17/2016 11:05 PM, Eko Budiharto wrote:
dear all, I have a list using mailman. It cannot send mails to yahoo, hotmail and gmail. I check all setting in the mailman, but I still cannot find the problem yet. Please help me if someone who ever experience like this.
It's hard to tell without more information such as bounce messages or log messages, but this could be a DMARC issue. See <https://wiki.list.org/x/17891458> and <https://wiki.list.org/DEV/DMARC>.
It is also possible your server is on one or more blacklists. Check at, e.g., <http://mxtoolbox.com/blacklists.aspx>
Also see <https://wiki.list.org/x/4030690>.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

as others said before, your MTA needs to be configured correctly. Besides SPF and DMARK your server has to have a reverse pointer, which resolves properly. In mailman either set the reply-to to the original sender or the FROM to the list itself. If that all is given and you’re not blacklisted, contact the postmasters via their help page. If all is OK, they will white-list your server.
cheers Matthias

The problem is more likely in the MTA rather then mailman. Have you checked the mailman logs? Do you have access to the MTA logs? Have you tried sending an email outside of mailman?
Do you know aht the MTA is? common ones include postfix, sendmail, qmail, and exim.
On 9/18/2016 2:05 AM, Eko Budiharto wrote:

On 09/17/2016 11:05 PM, Eko Budiharto wrote:
dear all, I have a list using mailman. It cannot send mails to yahoo, hotmail and gmail. I check all setting in the mailman, but I still cannot find the problem yet. Please help me if someone who ever experience like this.
It's hard to tell without more information such as bounce messages or log messages, but this could be a DMARC issue. See <https://wiki.list.org/x/17891458> and <https://wiki.list.org/DEV/DMARC>.
It is also possible your server is on one or more blacklists. Check at, e.g., <http://mxtoolbox.com/blacklists.aspx>
Also see <https://wiki.list.org/x/4030690>.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

as others said before, your MTA needs to be configured correctly. Besides SPF and DMARK your server has to have a reverse pointer, which resolves properly. In mailman either set the reply-to to the original sender or the FROM to the list itself. If that all is given and you’re not blacklisted, contact the postmasters via their help page. If all is OK, they will white-list your server.
cheers Matthias

The problem is more likely in the MTA rather then mailman. Have you checked the mailman logs? Do you have access to the MTA logs? Have you tried sending an email outside of mailman?
Do you know aht the MTA is? common ones include postfix, sendmail, qmail, and exim.
On 9/18/2016 2:05 AM, Eko Budiharto wrote:
participants (5)
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Eko Budiharto
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Mark Sapiro
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Matthias Schmidt
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Richard Shetron
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Timothy Jasionowski