Re: Can someone explain HELO to me?
Hello Roelof Otten everyone else, on 06-Dez-2006 at 01:45 you (Roelof Otten) wrote: ASK Hmmm. I'd regard that as problematic just as well. My IP address ASK is dynamic and has nothing to do with the mail relayer that is set ASK for my domain. A reverse lookup in the HELO state would fail. But still it's what it's supposed to do. The EHLO should give a domain name that identifies the client system. When using an email client to relay messages thru the SMTP server of my ISP, my machine is not a part of the remote systems network. It has no domain name. Its just an SMTP client. On your LAN to your local mail server that can be your computer name, as it's likely that that will point to the right computer (it does on my LAN), but when you're talking to something else you should give a domain name or a literal address. AFAIK it doesn't matter which name is provided (as long as it is a unique identifier and not a reserved name like localhost), because it can not be verified by the remote system anyway (HELO should not be used for any sort of identification, thats done with the DNS, but in reality it is very well used for identifying and blocking relay attempts of spammers - which is ok for me). If I send a HELO something or HELO something.neurowerx.de has the same result, a received: from unknown (HELO ...) added to the message by the remote system. -- Best regards, Alexander (http://www.neurowerx.de) The release of atomic energy constitutes a new force too revolutionary to consider in the framework of old ideas. -- Harry S. Truman Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
On Wed, 6 Dec 2006 01:45:32 +0100, Roelof Otten wrote: Hmmm. I'd regard that as problematic just as well. My IP address is dynamic and has nothing to do with the mail relayer that is set for my domain. A reverse lookup in the HELO state would fail. But still it's what it's supposed to do. The EHLO should give a domain name that identifies the client system. On your LAN to your local mail server that can be your computer name, as it's likely that that will point to the right computer (it does on my LAN), but when you're talking to something else you should give a domain name or a literal address. My knowledge on this subject is 'nil', hence my original post. However, my newsreader (Dialog) has an 'Advanced SMTP Settings' dialog which allows the user to specifically set the SMTP HELO identification. If it is left blank then the local computer name is used. To me that seems a good solution? In my case shouldn't HELO be kentra.co.uk? -- Best regards Barry barryh'at'kentra'dot'co'dot'uk Using TheBat! version 3.85.03 and AntispamSniper 1.6.7.3 Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
Barry @ 2006-12-06 3:02:51 AM Can someone explain HELO to me? mid:[EMAIL PROTECTED] My knowledge on this subject is 'nil', hence my original post. However, my newsreader (Dialog) has an 'Advanced SMTP Settings' dialog which allows the user to specifically set the SMTP HELO identification. If it is left blank then the local computer name is used. To me that seems a good solution? I'd say no. In my case shouldn't HELO be kentra.co.uk? Probably not. From section 3.5 of the standard: At the time the transmission channel is opened there is an exchange to ensure that the hosts are communicating with the hosts they think they are. The following two commands are used in transmission channel opening and closing: HELO SP domain CRLF QUIT CRLF In the HELO command the host sending the command identifies itself; the command may be interpreted as saying Hello, I am domain. Unless your local computer is the mail host for kentra.co.uk, you don't want to identify yourself as kentra.co.uk. Something like your computer's name or the-randomly-assigned-name-given-you-by.your-isp.com would work better. Have you been having problems? If not, I wouldn't worry about it. -- Chris Using The Bat! v3.85.03 on Windows XP 5.1 Build 2600 Service Pack 2. Accessing a POP3 mailbox. Spotted on a toilet in a London office block: TOILET OUT OF ORDER. PLEASE USE FLOOR BELOW. pgpNgiuguqzIa.pgp Description: PGP signature Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
On Wed, 6 Dec 2006 08:36:25 -0600, Chris W. wrote: Unless your local computer is the mail host for kentra.co.uk, you don't want to identify yourself as kentra.co.uk. Something like your computer's name or the-randomly-assigned-name-given-you-by.your-isp.com would work better. Have you been having problems? If not, I wouldn't worry about it. Thanks Chris, now I understand...I never was worried, just intrigued. -- Best regards Barry barryh'at'kentra'dot'co'dot'uk Using TheBat! version 3.85.03 and AntispamSniper 1.6.7.3 Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Can someone explain HELO to me?
Hi all Looking at headers from TB I can see Helo=Office Office is the Full Computer Name of my XP desktop machine. Does TB! decide this? Why? Can I decide what this should be? -- Best regards Barry barryh'at'kentra'dot'co'dot'uk Using TheBat! version 3.85.03 and AntispamSniper 1.6.7.3 Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
Hello Barry everyone else, on 05-Dez-2006 at 17:42 you (Barry) wrote: Does TB! decide this? Yes (but actually, the current alpha/beta versions use localhost, which is quite problematic). Why? In the SMTP handshake state the client (or rather, the machine wishing to relay a message to another SMTP server) should send an identification, thats the HELO (or EHLO). When official SMTP servers are talking to each other, the handshake must be a fully qualified domain name (like mail.domain.com). When a client like TB talks to an SMTP server, the machine usually has no fully qualified domain name, so the local machine's name is used instead. Can I decide what this should be? No. -- Best regards, Alexander (http://www.neurowerx.de) NP: Sushi Bar - Damask Rose by Vangelis (from the 2003 compilation Blade Runner Soundtrack (Esper Bootleg)) Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
Hi On Tuesday 5 December 2006 at 6:48:38 PM, in mid:[EMAIL PROTECTED], Alexander S. Kunz wrote: When a client like TB talks to an SMTP server, the machine usually has no fully qualified domain name, so the local machine's name is used instead. Can I decide what this should be? No. What about start control panel system computer name? Does TB! not use that anymore? -- Best regards, MFPA Don't talk unless you can improve on the silence Using The Bat! v3.80.06 on Windows XP 5.1 Build 2600 Service Pack 1 Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
Hi MFPA, on Tue, 5 Dec 2006 20:09:07 +GMT (05.12.2006, 21:09 +0100GMT here), you wrote: When a client like TB talks to an SMTP server, the machine usually has no fully qualified domain name, so the local machine's name is used instead. Can I decide what this should be? No. M What about start control panel system computer name? Does M TB! not use that anymore? No, not here. It uses localhost instead. -- Cheers Peter A truly happy person is one who can enjoy the scenery on a detour. Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
Hello Peter Meyns everyone else, on 05-Dez-2006 at 21:14 you (Peter Meyns) wrote: M What about start control panel system computer name? Does M TB! not use that anymore? No, not here. It uses localhost instead. That is a bug of the current betas .07 and .08. http://www.ritlabs.com/bt/view.php?id=6111 -- Best regards, Alexander (http://www.neurowerx.de) NP: I Dreamt Music by Vangelis Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
Hi Alexander, on Tue, 5 Dec 2006 21:22:09 +0100GMT (05.12.2006, 21:22 +0100GMT here), you wrote: M What about start control panel system computer name? Does M TB! not use that anymore? No, not here. It uses localhost instead. ASK That is a bug of the current betas .07 and .08. ASK http://www.ritlabs.com/bt/view.php?id=6111 I checked older messages. It is the same in the release version 3.85.03. In older versions a reference to the respective ISP is used. -- Cheers Peter Error: System price error - Inadequate money spent on hardware Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
Hello Peter Meyns everyone else, on 05-Dez-2006 at 21:34 you (Peter Meyns) wrote: No, not here. It uses localhost instead. ASK That is a bug of the current betas .07 and .08. ASK http://www.ritlabs.com/bt/view.php?id=6111 I checked older messages. It is the same in the release version 3.85.03. I haven't checked older versions, sorry. The original poster on TBBETA reverted to beta .06 where it uses the local machine name instead. See the thread on TBBETA: msgid:[EMAIL PROTECTED] In older versions a reference to the respective ISP is used. Hmmm. I'd regard that as problematic just as well. My IP address is dynamic and has nothing to do with the mail relayer that is set for my domain. A reverse lookup in the HELO state would fail. -- Best regards, Alexander (http://www.neurowerx.de) NP: Wounded Animals by Vangelis Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
Hi On Tuesday 5 December 2006 at 8:14:04 PM, in mid:[EMAIL PROTECTED], Peter Meyns wrote: Hi MFPA, on Tue, 5 Dec 2006 20:09:07 +GMT (05.12.2006, 21:09 +0100GMT here), you wrote: When a client like TB talks to an SMTP server, the machine usually has no fully qualified domain name, so the local machine's name is used instead. Can I decide what this should be? No. M What about start control panel system computer name? Does M TB! not use that anymore? No, not here. It uses localhost instead. Alexander mentioned the current alpha/beta versions use that. I just looked and here it now seems to use the domain name from some of my email addresses. Always the same domain name, not from either of my most-used addresses. -- Best regards, MFPA Hard work never killed anyone, but why take a risk? Using The Bat! v3.80.06 on Windows XP 5.1 Build 2600 Service Pack 1 Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
Re: Can someone explain HELO to me?
Hallo Alexander, On Tue, 5 Dec 2006 21:47:21 +0100GMT (5-12-2006, 21:47 , where I live), you wrote: In older versions a reference to the respective ISP is used. ASK Hmmm. I'd regard that as problematic just as well. My IP address is ASK dynamic and has nothing to do with the mail relayer that is set for my ASK domain. A reverse lookup in the HELO state would fail. But still it's what it's supposed to do. The EHLO should give a domain name that identifies the client system. On your LAN to your local mail server that can be your computer name, as it's likely that that will point to the right computer (it does on my LAN), but when you're talking to something else you should give a domain name or a literal address. -- Groetjes, Roelof Sometimes, when it's quiet, you can hear the brain cells die. --- SLR http://www.voormijalleen.nl/ The Bat! 3.86.8 ALPHA (beta) Windows XP 5.1 Build 2600 Service Pack 2 1 pop3 account, server on LAN OTFE enabled P4 3GHz 2 GB RAM pgpjPX8GxUNSR.pgp Description: PGP signature Current version is 3.85.03 | 'Using TBUDL' information: http://www.silverstones.com/thebat/TBUDLInfo.html
