Re: sendmail vs postfix : robustness, stability vulnerabilities
On 01/23/2015 08:43 AM, Roger Goh wrote: Q3: Was told by our vendor that they set up 'commercial' version of sendmail which has a separate interface/module GUI for whitelisting blacklisting. Is there a commercial version of 'postfix' which we can get official (eg: supported by RHEL) support with add-on user-friendly interfaces/GUI? If anyone can post a link/url that gave comparisons of the above 2 in the areas of stability, robustness vulnerabilites, most appreciate it Roger It's my experience that just because an application has a commercial counterpart, that doesn't necessarily make it better. Granted in many cases when you pay for something you're kind of buying entitlement to support. But if it's support you're looking for, I would strongly advise you to consider looking for an IT to give you their recommendation of which they will support for a fee. I would expect for members this postfix maillist to have some bias toward postfix over Sendmail. If they didn't feel it were they best, they would probably be using something different. I rarely use gui for my administration chores, except for the gui frontends that I configure for my commandline commands. However I did perform a quick Google search for Postfix and gui and found this: http://postfixadmin.sourceforge.net/ I might explore it and so that I can give more feedback on this as well as some of the other hits that came up. At a glance it does have a support forum, which I consider important for any application that I might consider a fixture in my environment. I used Sendmail for years before I changed over to Postfix. Initially it appeared to be less friendly than Sendmail. But after a short period of time I appeared to be easier to setup and more friendly than Sendmail. I had used Sendmail for about 10 years before changing to Postfix. I don't have anything bad to say about either. I changed to Postfix when I migrated to Ubuntu over Fedora. -- L. James -- L. D. James lja...@apollo3.com www.apollo3.com/~ljames
How to Configure forward (redirect) for specific from email address
I'm familiar how to use aliases to send email addressed to specific email address to a specific user. Can someone advise me of a feature to reroute (send) email from specific email address to a specific user? For instance: From email address|To User - u...@test.com|user1 In the above a user with the email address of u...@test.com has sent an email to us...@domain.com. We are trying to reroute specific emails from certain email addresses to a specific user on the machine, in this case, local user1 instead of local user2. I'm sure there is better terminology for this, of which I'm sure I will learn by the comments from the gurus in this list. Thanks in advance for any input. -- L. James -- L. D. James lja...@apollo3.com www.apollo3.com/~ljames
Re: How to Configure forward (redirect) for specific from email address
Am 26.01.2015 um 20:06 schrieb L. D. James: I'm familiar how to use aliases to send email addressed to specific email address to a specific user. Can someone advise me of a feature to reroute (send) email from specific email address to a specific user? For instance: From email address|To User - u...@test.com|user1 you could give that a try: http://www.postfix.org/postconf.5.html#canonical_maps http://www.postfix.org/postconf.5.html#canonical_classes http://www.postfix.org/ADDRESS_REWRITING_README.html but typically postfix only looks at the sender *or* RCPT, not both
Re: How to Configure forward (redirect) for specific from email address
L. D. James: I'm familiar how to use aliases to send email addressed to specific email address to a specific user. Can someone advise me of a feature to reroute (send) email from specific email address to a specific user? For instance: From email address|To User - u...@test.com|user1 In the above a user with the email address of u...@test.com has sent an email to us...@domain.com. We are trying to reroute specific emails from certain email addresses to a specific user on the machine, in this case, local user1 instead of local user2. Delivery dependent on the combination of (sender AND recipient) is not implemented in Postfix itself (actually, delivery based on any combination of properties isn't implemented in Postfix itself). With a Milter (in Perl, Python, C, or other), one could do this: Receive envelope sender address Receive envelope recipient address(es) Receive end-of-message event Add new envelope recipient(s) based on sender and recipient address(es) Delete old envelope recipient(s) Long ago I decided to provide interfaces for Milters, policy servers, etc. instead of trying to build everything into Postfix itself. Wietse
Re: How to Configure forward (redirect) for specific from email address
On Mon, Jan 26, 2015 at 02:20:45PM -0500, Wietse Venema wrote: Delivery dependent on the combination of (sender AND recipient) is not implemented in Postfix itself (actually, delivery based on any combination of properties isn't implemented in Postfix itself). Specifically, content filters aside, the recipient address always determines the address class (local, ..., relay, default). And once the recipient is determined to be remote, there is some wiggle room for selecting a sender dependent transport or relay. -- Viktor.
E-mail Log Search Engine v0.9.18 released
Hello there,* *I've released *version 0.9.18 of the ELSE *as a tar.gz archive on Sourceforge: https://sourceforge.net/projects/x-itools/files/X-Itools%20releases/E-mail%20Log%20Search%20Engine/ https://sourceforge.net/projects/x-itools/files/X-Itools%20releases/E-mail%20Log%20Search%20Engine As well as an updated Virtual Machine based on CentOS 7, made for demo purpose. Availability of documentations for v0.9.18 is currently an ongoing process, but some is already available in the Sourceforge Wiki pages of this project, there: http://sourceforge.net/p/x-itools/wiki/ http://sourceforge.net/p/x-itools/wiki/Documentation%20for%20Users For this release, the biggest feature I've tried to implement is the *RTAAM* engine. If I had to define it, I would give 3 definitions: - *an E-mail flow threats detection and prevention system*, or - *an E-mail Firewall solution*, or - *a mix of Postfix/Anvil, Fail2ban, Firewall, Monitoring, Reporting* Enjoy :) -- Nicolas attachment: hahnn.vcf
Re: How to Configure forward (redirect) for specific from email address
I would maybe try to implement that using several postfix instances... One to take a routing decision regarding the sender email address... that would send the email to the second stage postfix server if sender is u...@test.com... And another one second stage to take a routing decision regarding the recipient email address... Well, a kind of... Or if I understand you well, if your goal is to send all email flow of u...@test.com sender systematically to the same recipient (user1), you probably need a routing decision taken only on the sender email address... Regards, Nicolas Le 26/01/2015 20:06, L. D. James a écrit : I'm familiar how to use aliases to send email addressed to specific email address to a specific user. Can someone advise me of a feature to reroute (send) email from specific email address to a specific user? For instance: From email address|To User - u...@test.com|user1 In the above a user with the email address of u...@test.com has sent an email to us...@domain.com. We are trying to reroute specific emails from certain email addresses to a specific user on the machine, in this case, local user1 instead of local user2. I'm sure there is better terminology for this, of which I'm sure I will learn by the comments from the gurus in this list. Thanks in advance for any input. -- L. James
Re: What is good control for encryption in and out of Postscreen internal SMTP server?
On Mon, Jan 26, 2015 at 09:35:11PM +, srach wrote: In from Internet | IP=1.2.3.4 Postscreen | IP=loopback-only Postscreen Internal SMTP server [X] | -- 'in' IP=127.0.0.1:8001, out' IP=1.2.3.4 Relay SMTP server to some different clients What is the good setting for controling the cipher for the step I mark with [X] there?? Now it is 127.0.0.1 but I may move or change it later. Is it confusing me some because of the configuration for the Postscreen When the Postscreen daemon talks to the internal SMTP server what service is it using? The postscreen(8) service does not use TCP to pass traffic. Connections from whitelisted clients are passed via local IPC to to the smtpd/pass service. -- Viktor.
Re: How to Configure forward (redirect) for specific from email address
On 01/26/2015 08:15 PM, Wietse Venema wrote: L. D. James: All the email from the sender, I would like to have it rerouted. That was not obvious from the description. To redirect ALL mail from a specific sender regardless of its recipients, you can use an access map: /etc/postfix/main.cf: smtpd_whatever_restrictions = ... check_sender_access hash:/etc/postfix/sender_redirect ... /etc/postfix/sender_redirect: us...@example.com REDIRECT us...@example.net Wietse Thanks for the generous support and feedback... giving me opportunity to clarify my intentions. I mentioned the from and to because I thought it was a criterion. I should have added that the to didn't matter. Have a nice day, and things for a great package! -- L. James -- L. D. James lja...@apollo3.com www.apollo3.com/~ljames
Re: How to Configure forward (redirect) for specific from email address
L. D. James: All the email from the sender, I would like to have it rerouted. That was not obvious from the description. To redirect ALL mail from a specific sender regardless of its recipients, you can use an access map: /etc/postfix/main.cf: smtpd_whatever_restrictions = ... check_sender_access hash:/etc/postfix/sender_redirect ... /etc/postfix/sender_redirect: us...@example.com REDIRECT us...@example.net Wietse
Re: How to Configure forward (redirect) for specific from email address
On 01/26/2015 08:15 PM, Wietse Venema wrote: L. D. James: All the email from the sender, I would like to have it rerouted. That was not obvious from the description. To redirect ALL mail from a specific sender regardless of its recipients, you can use an access map: /etc/postfix/main.cf: smtpd_whatever_restrictions = ... check_sender_access hash:/etc/postfix/sender_redirect ... /etc/postfix/sender_redirect: us...@example.com REDIRECT us...@example.net Wietse Thanks again, Wietse. Your example was extremely easy to follow and works like a charm... it's perfect! -- L. James -- L. D. James lja...@apollo3.com www.apollo3.com/~ljames
Re: How to Configure forward (redirect) for specific from email address
On 01/26/2015 04:34 PM, Nicolas HAHN wrote: I would maybe try to implement that using several postfix instances... One to take a routing decision regarding the sender email address... that would send the email to the second stage postfix server if sender is u...@test.com... And another one second stage to take a routing decision regarding the recipient email address... Well, a kind of... Or if I understand you well, if your goal is to send all email flow of u...@test.com sender systematically to the same recipient (user1), you probably need a routing decision taken only on the sender email address... Regards, Nicolas Le 26/01/2015 20:06, L. D. James a écrit : I'm familiar how to use aliases to send email addressed to specific email address to a specific user. Can someone advise me of a feature to reroute (send) email from specific email address to a specific user? For instance: From email address|To User - u...@test.com|user1 In the above a user with the email address of u...@test.com has sent an email to us...@domain.com. We are trying to reroute specific emails from certain email addresses to a specific user on the machine, in this case, local user1 instead of local user2. I'm sure there is better terminology for this, of which I'm sure I will learn by the comments from the gurus in this list. Thanks in advance for any input. -- L. James Thanks, Nicolas. You understand it well. I'm trying to get all messages from u...@test.com to go to one specific email address. By the way, the purpose is because one of my users has complained of being spammed by the user. So, as administrator I am setting up a spam account to accommodate the messages and report the abuse to his email provider. In this case the email address is a gmail.com address, the server IP is a google.com IP. In normal circumstances I'd just block the server as a black hole. But for obvious reasons I don't want to block google.com as a black hole. I hope to find a way to get google to control their spammers, the same way I would if some of my users started spammer/harrassing others. Thanks for the input! -- L. James -- L. D. James lja...@apollo3.com www.apollo3.com/~ljames
Re: How to Configure forward (redirect) for specific from email address
On 01/26/2015 02:20 PM, Wietse Venema wrote: L. D. James: I'm familiar how to use aliases to send email addressed to specific email address to a specific user. Can someone advise me of a feature to reroute (send) email from specific email address to a specific user? For instance: From email address|To User - u...@test.com|user1 In the above a user with the email address of u...@test.com has sent an email to us...@domain.com. We are trying to reroute specific emails from certain email addresses to a specific user on the machine, in this case, local user1 instead of local user2. Delivery dependent on the combination of (sender AND recipient) is not implemented in Postfix itself (actually, delivery based on any combination of properties isn't implemented in Postfix itself). With a Milter (in Perl, Python, C, or other), one could do this: Receive envelope sender address Receive envelope recipient address(es) Receive end-of-message event Add new envelope recipient(s) based on sender and recipient address(es) Delete old envelope recipient(s) Long ago I decided to provide interfaces for Milters, policy servers, etc. instead of trying to build everything into Postfix itself. Wietse Thanks. The combination isn't a criterion. It's only the sender's email address that I'm concerned with. All the email from the sender, I would like to have it rerouted. I'll be studying the information you provided to try to get this done. -- L. James -- L. D. James lja...@apollo3.com www.apollo3.com/~ljames
Re: How to Configure forward (redirect) for specific from email address
On 01/26/2015 02:17 PM, li...@rhsoft.net wrote: Am 26.01.2015 um 20:06 schrieb L. D. James: I'm familiar how to use aliases to send email addressed to specific email address to a specific user. Can someone advise me of a feature to reroute (send) email from specific email address to a specific user? For instance: From email address|To User - u...@test.com|user1 you could give that a try: http://www.postfix.org/postconf.5.html#canonical_maps http://www.postfix.org/postconf.5.html#canonical_classes http://www.postfix.org/ADDRESS_REWRITING_README.html but typically postfix only looks at the sender *or* RCPT, not both Thanks for the links. I described a scenario, but I'm only concerned with sender, not both. -- L. James -- L. D. James lja...@apollo3.com www.apollo3.com/~ljames
SMTP SASL between different local dmains.
It’s possible to configure Postfix to require SASL authentication for the relay between different local domains? Regards. -- Stefano smime.p7s Description: S/MIME cryptographic signature
Re: What is good control for encryption in and out of Postscreen internal SMTP server?
Viktor Dukhovni: On Mon, Jan 26, 2015 at 09:35:11PM +, srach wrote: In from Internet | IP=1.2.3.4 Postscreen | IP=loopback-only Postscreen Internal SMTP server [X] | -- 'in' IP=127.0.0.1:8001, out' IP=1.2.3.4 Relay SMTP server to some different clients What is the good setting for controling the cipher for the step I mark with [X] there?? Now it is 127.0.0.1 but I may move or change it later. Is it confusing me some because of the configuration for the Postscreen When the Postscreen daemon talks to the internal SMTP server what service is it using? The postscreen(8) service does not use TCP to pass traffic. Connections from whitelisted clients are passed via local IPC to to the smtpd/pass service. Indeed. As documented, postscreen(8) is not a proxy. It hands off the connection and stays out of the way. Wietse
What is good control for encryption in and out of Postscreen internal SMTP server?
I am reading and working to understand the MULTI_INSTANCE possibilities in Postfix. I am not sure yet that is a good solution for me. May be I can do what I must with only transport maps. I although have a question for configuring Postfix encryption if I am using many instances. Only a theoretical example In from Internet | IP=1.2.3.4 Postscreen | IP=loopback-only Postscreen Internal SMTP server [X] | -- 'in' IP=127.0.0.1:8001, out' IP=1.2.3.4 Relay SMTP server to some different clients What is the good setting for controling the cipher for the step I mark with [X] there? Now it is 127.0.0.1 but I may move or change it later. Is it confusing me some because of the configuration for the Postscreen smtp inet n - n - 1 postscreen smtpd pass - - n - - smtpd dnsblog unix - - n - 0 dnsblog tlsproxy unix - - n - 0 tlsproxy ... tlsmgr unix - - n 1000? 1 tlsmgr ... smtp unix - - n - - smtp relay unix - - n - - smtp ... #local unix - n n - - local ... When the Postscreen daemon talks to the internal SMTP server what service is it using? When the internal SMTP server talk then to the next-hop SMTP server what service is it using? I am not complete clear. But want to understand the steps. *S*
