Does smtpd_sasl_auth in postfix alleviate the rejection of direct mail from dynamic ip's? -- Patrick Shanahan Plainfield, Indiana, USA HOG # US1244711 http://wahoo.no-ip.org Photo Album: http://wahoo.no-ip.org/gallery2 Registered Linux User #207535 @ http://counter.li.org -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Patrick Shanahan wrote:
Does smtpd_sasl_auth in postfix alleviate the rejection of direct mail from dynamic ip's?
No. authentication is used to identify users that are allowed to send mails to external domains: to relay, it has nothing to do with the reception of mail. If you wish to reject clients with dynamic IPs you will have to look for the common features of these clients and use measures that use them: - reject with zen.spamhaus.org - reject all clients that have too many numbers in their hostname - use greylisting, nolisting etc. -- Sandy List replies only please! Please address PMs to: news-reply2 (@) japantest (.) homelinux (.) com -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Wed, 2008-12-31 at 01:24 +0100, Sandy Drobic wrote:
Patrick Shanahan wrote:
Does smtpd_sasl_auth in postfix alleviate the rejection of direct mail from dynamic ip's?
No. authentication is used to identify users that are allowed to send mails to external domains: to relay, it has nothing to do with the reception of mail.
If you wish to reject clients with dynamic IPs you will have to look for the common features of these clients and use measures that use them:
Umm, I may have interpreted the OP wrong, but it sounds like his mail is being rejected due to dynDNS. -- Michael S. Dunsavage -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Michael S. Dunsavage wrote:
On Wed, 2008-12-31 at 01:24 +0100, Sandy Drobic wrote:
Patrick Shanahan wrote:
Does smtpd_sasl_auth in postfix alleviate the rejection of direct mail from dynamic ip's? No. authentication is used to identify users that are allowed to send mails to external domains: to relay, it has nothing to do with the reception of mail.
If you wish to reject clients with dynamic IPs you will have to look for the common features of these clients and use measures that use them:
Umm, I may have interpreted the OP wrong, but it sounds like his mail is being rejected due to dynDNS.
Oh, you're probably right. Still, the answer is nevertheless no. (^-^) The header that the client was authenticated has no relevance to the problem in question. That decision (if the mail should be rejected or not) is made long before the header is evaluated. Most of the tests to accept mails are based on ip address, dns record, reverse dns record, helo name and envelope sender/recipient. Since most dynamic clients are rejected based on their ip address (by use of a blacklist) the header has no influence in that regard. The time when you could send mails directly from a dynamic ip is coming rapidly to an end due to the huge amount of spam and infected pcs. :-( If you want to set up a reliable mail system that can send mails directly you need a fixed ip and a correct reverse dns record. You can either use a virtual private server for a few bucks a month or you have to search if it is possible to get a fixed ip from your provider or another service provider. There is no other solution. -- Sandy List replies only please! Please address PMs to: news-reply2 (@) japantest (.) homelinux (.) com -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Tue, 2008-12-30 at 19:18 -0500, Patrick Shanahan wrote:
Does smtpd_sasl_auth in postfix alleviate the rejection of direct mail from dynamic ip's?
I just spent the weekend myself working on this. I authenticated my mail server through my ISP's. -- Michael S. Dunsavage -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Tue, 2008-12-30 at 19:38 -0500, Michael S. Dunsavage wrote:
On Tue, 2008-12-30 at 19:18 -0500, Patrick Shanahan wrote:
Does smtpd_sasl_auth in postfix alleviate the rejection of direct mail from dynamic ip's?
I just spent the weekend myself working on this. I authenticated my mail server through my ISP's.
This is only slightly related to this thread but I just wanted to mention that gmail allows smtp auth for sending which can be a good option for people who roam a lot and need a consistent host for sending. -- John Lange www.johnlange.ca -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
participants (4)
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John Lange -
Michael S. Dunsavage -
Patrick Shanahan -
Sandy Drobic