Re: huge mail going throw my mail server how to protect

On 04/07/2012 08:28 AM, Joe Zeff wrote: > On 04/06/2012 04:43 PM, Ed Greshko wrote: >> Wow, you*really* don't know anything about how to run an email*server* to >> service >> *incoming* email for domains. > > Which is why I've no intention of running one. And why it has been suggested that you

Re: huge mail going throw my mail server how to protect

On 04/06/2012 05:48 PM, Edward M wrote: On 04/06/2012 03:03 PM, Joe Zeff wrote: If you're only running an SMTP server, that's not an issue It is an issue if it is a open mail relay. http://en.wikipedia.org/wiki/Open_relay Yes, I've known what an open relay is for at least fifteen years. Th

Re: huge mail going throw my mail server how to protect

On 04/06/2012 03:03 PM, Joe Zeff wrote: If you're only running an SMTP server, that's not an issue It is an issue if it is a open mail relay. http://en.wikipedia.org/wiki/Open_relay -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https

Re: huge mail going throw my mail server how to protect

On 04/06/2012 04:43 PM, Ed Greshko wrote: Wow, you*really* don't know anything about how to run an email*server* to service *incoming* email for domains. Which is why I've no intention of running one. -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription

Re: huge mail going throw my mail server how to protect

On 04/06/2012 03:15 PM, Reindl Harald wrote: but the topic is not about your home machine the topic is about a mailserver (the ones receive emails for their users) Yes, but I was thinking in terms of an SMTP server, not a complete mail server. That's why I was making the suggestions I did. T

Re: huge mail going throw my mail server how to protect

On 04/07/2012 05:50 AM, Joe Zeff wrote: > I'm talking about closing incoming connections from the Internet on Port 25, > not > outbound. Of course, depending on your ISP you might not be able to connect > to > other servers on Port 25 when sending mail, but that's not what I was > referring to.

Re: huge mail going throw my mail server how to protect

Am 07.04.2012 00:03, schrieb Joe Zeff: > On 04/06/2012 02:54 PM, Reindl Harald wrote: >> if you are runnaing an MX you MUST accept incoming port 25 >> from the internet or how do you imagine you receive new mails >> from the world? > > If you're only running an SMTP server, that's not an issue.

Re: huge mail going throw my mail server how to protect

On 04/06/2012 02:54 PM, Reindl Harald wrote: if you are runnaing an MX you MUST accept incoming port 25 from the internet or how do you imagine you receive new mails from the world? If you're only running an SMTP server, that's not an issue. If, and only if you're providing POP3 or IMAP, I'd

Re: huge mail going throw my mail server how to protect

Am 06.04.2012 23:50, schrieb Joe Zeff: > On 04/06/2012 02:34 PM, Ed Greshko wrote: >> You seem to have 0 knowledge of how server to server email works. Please do >> some >> work to understand what actually transpires before you advise people. > > I'm talking about closing incoming connections f

Re: huge mail going throw my mail server how to protect

On 04/06/2012 02:34 PM, Ed Greshko wrote: You seem to have 0 knowledge of how server to server email works. Please do some work to understand what actually transpires before you advise people. I'm talking about closing incoming connections from the Internet on Port 25, not outbound. Of cour

Re: huge mail going throw my mail server how to protect

On 04/07/2012 12:44 AM, Joe Zeff wrote: > On 04/06/2012 09:31 AM, Ed Greshko wrote: >> So, it would seem that this system is going to be accepting incoming mails >> from the >> internet for at least one domain.. In that case it would be bad advice >> to simply >> close port 25. > > Not if he

Re: huge mail going throw my mail server how to protect

On 04/06/2012 11:22 AM, Reindl Harald wrote: so in my opinion if someone thinks "hey, i read some howtos and in two weeks my server is production ready" he makes a terrible mistake This reminds me of something that happened over a dozen years ago, when I was doing tech support for an ISP. I t

Re: huge mail going throw my mail server how to protect

On 04/06/2012 03:56 AM, Reindl Harald wrote: Am 06.04.2012 09:28, schrieb Rafiqul Islam: My question is too many unknown user sending mail using my MTA(Postfix) so that hotmail,google reject mail from my domain(mail.navigation.com and IP:202.53.168.75) and i don

Re: huge mail going throw my mail server how to protect

On 04/06/2012 11:12 AM, Heinz Diehl wrote: Getting blacklisted because you build an open relay is stupid, but nothing changes practice more and faster than adverse anecdote :-) Yup! I'm retired, so time isn't the issue. However, as there are only three people with email addresses at this dom

Re: huge mail going throw my mail server how to protect

Am 06.04.2012 20:12, schrieb Heinz Diehl: > On 06.04.2012, Joe Zeff wrote: > >> I have, a few times, considered setting up a mailserver of my own for my >> domain so that even when I was away from home all mail went through it. >> Every time I have, I've decided against it for exactly that reas

Re: huge mail going throw my mail server how to protect

On 06.04.2012, Joe Zeff wrote: > I have, a few times, considered setting up a mailserver of my own for my > domain so that even when I was away from home all mail went through it. > Every time I have, I've decided against it for exactly that reason. If more > people did the same, we'd not have as

Re: huge mail going throw my mail server how to protect

On 04/06/2012 09:51 AM, Reindl Harald wrote: public servers have to be tested and secured before they see the first time internet connections and by the hugeh damage open relays are doing all over the world this is the most important rule for mailservices I have, a few times, considered setting

Re: huge mail going throw my mail server how to protect

Am 06.04.2012 18:38, schrieb Heinz Diehl: > On 06.04.2012, Reindl Harald wrote: > >> anybody out there must not open port 25 from the internet >> becuase he was able to type "yum install postfix" > > In this case, one must indeed have opened port 25 manually, since "yum > install postfix" does

Re: huge mail going throw my mail server how to protect

Am 06.04.2012 18:44, schrieb Joe Zeff: > On 04/06/2012 09:31 AM, Ed Greshko wrote: >> So, it would seem that this system is going to be accepting incoming mails >> from the >> internet for at least one domain.. In that case it would be bad advice >> to simply >> close port 25. > > Not if

Re: huge mail going throw my mail server how to protect

On 04/06/2012 09:31 AM, Ed Greshko wrote: So, it would seem that this system is going to be accepting incoming mails from the internet for at least one domain.. In that case it would be bad advice to simply close port 25. Not if he uses smtpauth on port 587. Granted, telling him only to

Re: huge mail going throw my mail server how to protect

On 06.04.2012, Reindl Harald wrote: > anybody out there must not open port 25 from the internet > becuase he was able to type "yum install postfix" In this case, one must indeed have opened port 25 manually, since "yum install postfix" does not install any postfix configuration which has port 25

Re: huge mail going throw my mail server how to protect

On 04/07/2012 12:03 AM, Joe Zeff wrote: > Close incoming Port 25 and tell sendmail to accept mail only from 127.0.0.0. > HTH, > HAND. First of all, he has already stated that he is using Postfix, not sendmail. Second, you should not assume that closing port 25 is an option. Indeed, if you

Re: huge mail going throw my mail server how to protect

On 04/06/2012 12:28 AM, Rafiqul Islam wrote: My question is too many unknown user sending mail using my MTA(Postfix) so that hotmail,google reject mail from my domain(mail.navigation.com and IP:202.53.168.75) and i don't know how to stop this unexpected outgoing mail

Re: huge mail going throw my mail server how to protect

Thanks for good advice. BR, Rafiq On Fri, Apr 6, 2012 at 6:05 PM, Patrick Lists wrote: > On 04/06/2012 06:28 AM, Rafiqul Islam wrote: > >> Please help me how to stop this spamming frequently blocked from several >> public network >> > > From the other posts I take it your postfix server is not

Re: huge mail going throw my mail server how to protect

On 04/06/2012 06:28 AM, Rafiqul Islam wrote: Please help me how to stop this spamming frequently blocked from several public network From the other posts I take it your postfix server is not properly configured and is an open relay. Steps to fix: 1) realize that your postfix mail server is

Re: huge mail going throw my mail server how to protect

Am 06.04.2012 09:28, schrieb Rafiqul Islam: > My question is too many unknown user sending mail using my MTA(Postfix) so > that hotmail,google reject mail from my > domain(mail.navigation.com and IP:202.53.168.75) > and i don't know how to stop this > unexpected ou

Re: huge mail going throw my mail server how to protect

On 04/06/2012 03:28 PM, Rafiqul Islam wrote: > My question is too many unknown user sending mail using my MTA(Postfix) so > that > hotmail,google reject mail from my domain(mail.navigation.com > and IP:202.53.168.75) and i don't know how to > stop > this unexpected o

Re: huge mail going throw my mail server how to protect

man postqueue man postsuper postsuper -d queue_id postsuper -d 1FFC82D6A0 Am 06.04.2012 09:28, schrieb Rafiqul Islam: > My question is too many unknown user sending mail using my MTA(Postfix) so > that hotmail,google reject mail from my > domain(mail.navigation.com a

Re: huge mail going throw my mail server how to protect

On 04/06/2012 03:28 PM, Rafiqul Islam wrote: > My question is too many unknown user sending mail using my MTA(Postfix) so > that > hotmail,google reject mail from my domain(mail.navigation.com > and IP:202.53.168.75) and i don't know how to > stop > this unexpected o

Re: huge mail going throw my mail server how to protect

My question is too many unknown user sending mail using my MTA(Postfix) so that hotmail,google reject mail from my domain(mail.navigation.com and IP:202.53.168.75) and i don't know how to stop this unexpected outgoing mail. On Fri, Apr 6, 2012 at 11:56 AM, Ed Greshko wrote: > On 04/06/2012 12:

Re: huge mail going throw my mail server how to protect

On 04/06/2012 12:28 PM, Rafiqul Islam wrote: > message at #tail -f /var/log/maillog > > .244] refused to talk to me: 554 5.7.1 - ERROR: Mail refused - > <202.53.168.75> - > See http://postmaster.rr.com/amIBlockedByRR?ip=202.53.168.75) > Apr 6 10:37:07 navigationbd postfix/qmgr[29583]: 089E82D613: