ADMIN: RE: MTAs used
Please note that this thread has been moderated as off-topic. The Mail operations email list http://www.mailop.org/ may be a more appropriate venue for the discussion. Simon NANOG MLC -- Simon Lyall | Very Busy | Web: http://www.darkmere.gen.nz/ "To stay awake all night adds a day to your life" - Stilgar | eMT.
Re: MTAs used
On Wed, Aug 26, 2009 at 3:01 PM, wrote: > (Seriously - if 95% of the mail out there is spam, then the top 4-5 MTAs are > probably the ratware that's sending out the spam. Something to consider...) http://www.mailradar.com/mailstat/ Some of the most popular: 1. Sendmail; (24%) 2. Postfix (20%) 3. Qmail (17%) 4. Microsoft Mail In all fairness, the ratware programs that send out spam are usually MUAs, not MTAs, [RFC2476]. "Message Transfer Agent (MTA) -- A process which conforms to [SMTP-MTA], which acts as an SMTP server to accept messages from an MSA or another MTA" SMTP server installs that do not accept mail from other servers might be MSAs but are not MTAs. (The default mail server installed in Fedora doesn't count as a MTA, unless reconfigured to listen on some network interface, because the default config only accepts a SMTP connection from a local MUA using network loopback.) -- -- -J
Re: MTAs used
valdis.kletni...@vt.edu writes: > On Wed, 26 Aug 2009 16:50:51 +0300, Sharef Mustafa said: >> Can anyone please point me to a list of the most used MTAs (mail >> servers) and their market share? > > Now, did you want that in terms of "number of copies installed" or > "amount of mail handled"? Or maybe "used by most real companies"? http://www.oreillynet.com/pub/a/sysadmin/2007/01/05/fingerprinting-mail-servers.html Bjørn
Re: MTAs used
On Wed, Aug 26, 2009 at 04:01:11PM -0400, valdis.kletni...@vt.edu wrote: > (Seriously - if 95% of the mail out there is spam, then the top 4-5 MTAs are > probably the ratware that's sending out the spam. Something to consider...) That's true, especially given the size of the installed base. So in terms of (a) installations (b) message count (c) message volume (d) recipient count (e) etc. those ratware programs have got to be so far ahead of the usual suspects (sendmail, postfix, exim, etc.) that it's not even a race. ---Rsk
RE: MTAs used
If I had to guess.. Postfix Sendmail Exim ComminigatePro Beyond those you'd probably see a lot of the free webmail carriers (Gmail, yahoo, and hotmail/live all use "custom" MTA's) as well as IPSwitch's iMail and the Windows Server/IIS SMTP service. -Scott -Original Message- From: Deepak Jain [mailto:dee...@ai.net] Sent: Wednesday, August 26, 2009 4:10 PM To: valdis.kletni...@vt.edu; Sharef Mustafa Cc: nanog@nanog.org Subject: RE: MTAs used > Now, did you want that in terms of "number of copies installed" or > "amount of mail handled"? There's probably zillions of little Fedora > and > Ubuntu boxes running whatever MTA came off the disk that are handling 1 > or 2 pieces of mail a day, and then there's whatever backends are used > by MSN/Hotmail, Yahoo, AOL, etc. "This MTA packed by weight, not by > volume. > Some settling of contents may have occurred during shipping and > spamming." > > (Seriously - if 95% of the mail out there is spam, then the top 4-5 > MTAs are probably the ratware that's sending out the spam. Something > to consider...) In keeping with this concept, and turning it around. What MTA is exposed to the most spam? (1-x) That should tell you what MTA handles the most "good" mail by also being the destination for the most spam (good, live recipients). Or I could be missing something well known about mail flows. Deepak
RE: MTAs used
> Now, did you want that in terms of "number of copies installed" or > "amount of mail handled"? There's probably zillions of little Fedora > and > Ubuntu boxes running whatever MTA came off the disk that are handling 1 > or 2 pieces of mail a day, and then there's whatever backends are used > by MSN/Hotmail, Yahoo, AOL, etc. "This MTA packed by weight, not by > volume. > Some settling of contents may have occurred during shipping and > spamming." > > (Seriously - if 95% of the mail out there is spam, then the top 4-5 > MTAs are probably the ratware that's sending out the spam. Something > to consider...) In keeping with this concept, and turning it around. What MTA is exposed to the most spam? (1-x) That should tell you what MTA handles the most "good" mail by also being the destination for the most spam (good, live recipients). Or I could be missing something well known about mail flows. Deepak
Re: MTAs used
On Wed, 26 Aug 2009 16:50:51 +0300, Sharef Mustafa said: > Can anyone please point me to a list of the most used MTAs (mail > servers) and their market share? Now, did you want that in terms of "number of copies installed" or "amount of mail handled"? There's probably zillions of little Fedora and Ubuntu boxes running whatever MTA came off the disk that are handling 1 or 2 pieces of mail a day, and then there's whatever backends are used by MSN/Hotmail, Yahoo, AOL, etc. "This MTA packed by weight, not by volume. Some settling of contents may have occurred during shipping and spamming." (Seriously - if 95% of the mail out there is spam, then the top 4-5 MTAs are probably the ratware that's sending out the spam. Something to consider...) pgpVBcjSlh6M1.pgp Description: PGP signature
Re: MTAs used
According to the Google, the most used MTA is Ez-Pass :) allan On Wed, Aug 26, 2009 at 10:10 AM, Ronald Cotoni wrote: > > http://www.google.com/search?q=list+of+the+most+used+MTAs&ie=utf-8&oe=utf-8&aq=t&rls=com.frontmotion:en-US:unofficial&client=firefox-aand > > http://www.google.com/search?q=MTA+market+share&ie=utf-8&oe=utf-8&aq=t&rls=com.frontmotion:en-US:unofficial&client=firefox-a > > On Wed, Aug 26, 2009 at 8:50 AM, Sharef Mustafa > wrote: > > > Hi, > > > > > > > > Can anyone please point me to a list of the most used MTAs (mail > > servers) and their market share? > > > > > > > > BR > > > > >
Re: MTAs used
http://www.google.com/search?q=list+of+the+most+used+MTAs&ie=utf-8&oe=utf-8&aq=t&rls=com.frontmotion:en-US:unofficial&client=firefox-aand http://www.google.com/search?q=MTA+market+share&ie=utf-8&oe=utf-8&aq=t&rls=com.frontmotion:en-US:unofficial&client=firefox-a On Wed, Aug 26, 2009 at 8:50 AM, Sharef Mustafa wrote: > Hi, > > > > Can anyone please point me to a list of the most used MTAs (mail > servers) and their market share? > > > > BR > >
