Scott & Eric, You both are right on target. Thanks to your help, I now know what the issue is; and more importantly, you both have helped me pro-actively identify a future potential problem before it has a chance to impact my customer's. Thank you both very much!
Wolf -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, August 09, 2004 3:00 AM Subject: [IMail_Forum DIGEST] ---------------------------------------------------------------------- From: "Lim Siew Yin" <[EMAIL PROTECTED]> Subject: RE: [IMail Forum] Possible to setup IMAIL as a secondary email server? Date: Sun, 8 Aug 2004 15:47:52 +0800 Reply-To: [EMAIL PROTECTED] Wes & Sanford, You guys are a great help! Thanks. :) SY Lim. ---------------------------------------------------------------------- From: "Wolf Tombe" <[EMAIL PROTECTED]> Subject: [IMail Forum] DNSReports Mail server warnings Date: Sun, 8 Aug 2004 08:25:00 -0400 Reply-To: [EMAIL PROTECTED] This is a multi-part message in MIME format. ------=_NextPart_000_000C_01C47D21.3275A4E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I'm running iMail 8.12 with multiple mail domains each configured to = have its own IP number and each with its own DNS and MX records accordingly. = I preparing to launch these domains soon and while doing DNS and Mail = Server testing I find I'm getting the following two "warnings". Although = neither of these appears critical, I'd prefer to have no warnings if possible. = With this in mind, I'm wondering what iMail settings I should change to = resolve these issues. =20 WARNING: One or more of your mail servers may be claiming to be a host = other than what it really is (the SMTP greeting should be a 3-digit code, = followed by a space or a dash, then the host name). This probably won't cause any harm, but may be a technical violation of RFC821 4.3 (and RFC2821 = 4.3.1). mail.proudandout.net claims to be host *******************************2*22************************. =20 =20 WARNING: One or more of your mail servers does not accept mail in the = domain literal format ([EMAIL PROTECTED]). Mail servers are technically required RFC1123 5.2.17 to accept mail to domain literals for any of its IP addresses. Not accepting domain literals can make it more difficult to = test your mail server, and can prevent you from receiving E-mail from people reporting problems with your mail server. However, it is unlikely that = any problems will occur if the domain literals are not accepted. =20 mail.proudandout.net's [EMAIL PROTECTED] response: >>> RCPT TO:<[EMAIL PROTECTED]> <<< 550 not local host [67.101.20.141], not a gateway =20 Any suggestions will be greatly appreciated. =20 Thanks! ------=_NextPart_000_000C_01C47D21.3275A4E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html> <head> <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; = charset=3Dus-ascii"> <meta name=3DGenerator content=3D"Microsoft Word 10 (filtered)"> <style> <!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman";} a:link, span.MsoHyperlink {color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {color:purple; text-decoration:underline;} pre {margin:0in; margin-bottom:.0001pt; font-size:10.0pt; font-family:"Courier New";} span.EmailStyle17 {font-family:Arial; color:windowtext;} @page Section1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in;} div.Section1 {page:Section1;} --> </style> </head> <body lang=3DEN-US link=3Dblue vlink=3Dpurple> <div class=3DSection1> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'>I’m running iMail 8.12 with multiple mail = domains each configured to have its own IP number and each with its own DNS and MX = records accordingly. I preparing to launch these domains soon and while = doing DNS and Mail Server testing I find I’m getting the following two = “warnings”. Although neither of these appears critical, I’d prefer to have no warnings if possible. With this in mind, I’m wondering what = iMail settings I should change to resolve these issues.</span></font></p> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'> </span></font></p> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'>WARNING: One or more of your mail servers may be = claiming to be a host other than what it really is (the SMTP greeting should be a = 3-digit code, followed by a space or a dash, then the host name). This probably = won't cause any harm, but may be a technical violation of RFC821 4.3 (and = RFC2821 4.3.1).</span></font></p> <pre><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt;font-family:Arial'>mail.proudandout.net claims = to be host = *******************************2*22************************.</span></font= ></pre> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'> </span></font></p> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'> </span></font></p> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'>WARNING: One or more of your mail servers does not = accept mail in the domain literal format ([EMAIL PROTECTED]). Mail servers are technically required RFC1123 5.2.17 to accept mail to domain literals = for any of its IP addresses. Not accepting domain literals can make it more = difficult to test your mail server, and can prevent you from receiving E-mail from = people reporting problems with your mail server. However, it is unlikely that = any problems will occur if the domain literals are not = accepted.</span></font></p> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'> </span></font></p> <pre><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt;font-family:Arial'>mail.proudandout.net's = [EMAIL PROTECTED] response:</span></font></pre><pre><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt;font-family:Arial'> = >>> RCPT = TO:<[EMAIL PROTECTED]></span></font></pre><pre><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt;font-family:Arial'> = <<< 550 not local host [67.101.20.141], not a = gateway</span></font></pre> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'> </span></font></p> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'>Any suggestions will be greatly = appreciated.</span></font></p> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'> </span></font></p> <p class=3DMsoNormal><font size=3D2 face=3DArial><span = style=3D'font-size:10.0pt; font-family:Arial'>Thanks!</span></font></p> </div> </body> </html> ------=_NextPart_000_000C_01C47D21.3275A4E0-- ---------------------------------------------------------------------- Date: Sun, 08 Aug 2004 09:07:23 -0400 From: "R. Scott Perry" <[EMAIL PROTECTED]> Subject: Re: [IMail Forum] DNSReports Mail server warnings Reply-To: [EMAIL PROTECTED] >I m running iMail 8.12 with multiple mail domains each configured to have >its own IP number and each with its own DNS and MX records accordingly. I >preparing to launch these domains soon and while doing DNS and Mail Server >testing I find I m getting the following two warnings . Although neither >of these appears critical, I d prefer to have no warnings if >possible. With this in mind, I m wondering what iMail settings I should >change to resolve these issues. > >WARNING: One or more of your mail servers may be claiming to be a host >other than what it really is (the SMTP greeting should be a 3-digit code, >followed by a space or a dash, then the host name). This probably won't >cause any harm, but may be a technical violation of RFC821 4.3 (and >RFC2821 4.3.1). > >mail.proudandout.net claims to be host >*******************************2*22************************. This isn't an IMail issue -- it's a firewall issue. You have an insecure firewall that is leaking some information that it is trying to block, and by (partially) blocking the information, it breaks RFC compliance. Most likely, it's a Cisco PIX firewall that needs a "nofixup SMTP" line or something like that in it. >WARNING: One or more of your mail servers does not accept mail in the >domain literal format ([EMAIL PROTECTED]). Mail servers are technically >required RFC1123 5.2.17 to accept mail to domain literals for any of its >IP addresses. Not accepting domain literals can make it more difficult to >test your mail server, and can prevent you from receiving E-mail from >people reporting problems with your mail server. However, it is unlikely >that any problems will occur if the domain literals are not accepted. > >mail.proudandout.net's [EMAIL PROTECTED] response: > >>> RCPT TO:<[EMAIL PROTECTED]> > <<< 550 not local host [67.101.20.141], not a gateway This one is a bit trickier. If you are using NAT, you will probably need to add "[67.101.20.141]" as a host alias to your primary domain. Technically, the mailserver is required to accept E-mail in the domain literal format, but the only problems you are likely to encounter are with testing tools. Note that most mailservers cannot accept E-mail in that format anyways. -Scott --- Declude JunkMail: The advanced anti-spam solution for IMail mailservers since 2000. Declude Virus: Ultra reliable virus detection and the leader in mailserver vulnerability detection. Find out what you've been missing: Ask for a free 30-day evaluation. --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] ---------------------------------------------------------------------- From: "Eric Shanbrom \(Ipswitch\)" <[EMAIL PROTECTED]> Subject: Re: [IMail Forum] DNSReports Mail server warnings Date: Sun, 8 Aug 2004 09:08:29 -0400 Reply-To: [EMAIL PROTECTED] This is a multi-part message in MIME format. ------=_NextPart_000_0032_01C47D27.45503F20 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The first one is because you are behind a PIX firewall with the fixup = enabled for SMTP..This shouldn't be a problem except that any of you = users that need to SMTP Authenticate won't be able to as the PIX in this = configuration will not allow Extended SMTP commands which include Auth The second is most likely caused by the firewall as well as you are = probably in a Nat'd environment. If you want to comply with this portion = of the RFC all you need to do is bind the external IP to the NIC on the = mail server along with the internal ip's...Do not bind IMail to it = though. Keep everything you have the same (if it's working that is) Eric S ----- Original Message -----=20 From: Wolf Tombe=20 To: [EMAIL PROTECTED] Sent: Sunday, August 08, 2004 8:25 AM Subject: [IMail Forum] DNSReports Mail server warnings I'm running iMail 8.12 with multiple mail domains each configured to = have its own IP number and each with its own DNS and MX records = accordingly. I preparing to launch these domains soon and while doing = DNS and Mail Server testing I find I'm getting the following two = "warnings". Although neither of these appears critical, I'd prefer to = have no warnings if possible. With this in mind, I'm wondering what = iMail settings I should change to resolve these issues. WARNING: One or more of your mail servers may be claiming to be a host = other than what it really is (the SMTP greeting should be a 3-digit = code, followed by a space or a dash, then the host name). This probably = won't cause any harm, but may be a technical violation of RFC821 4.3 = (and RFC2821 4.3.1). mail.proudandout.net claims to be host = *******************************2*22************************. WARNING: One or more of your mail servers does not accept mail in the = domain literal format ([EMAIL PROTECTED]). Mail servers are technically = required RFC1123 5.2.17 to accept mail to domain literals for any of its = IP addresses. Not accepting domain literals can make it more difficult = to test your mail server, and can prevent you from receiving E-mail from = people reporting problems with your mail server. However, it is unlikely = that any problems will occur if the domain literals are not accepted. mail.proudandout.net's [EMAIL PROTECTED] response: >>> RCPT = TO:<[EMAIL PROTECTED]> <<< 550 not local host = [67.101.20.141], not a gateway Any suggestions will be greatly appreciated. Thanks! ------=_NextPart_000_0032_01C47D27.45503F20 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1458" name=3DGENERATOR> <STYLE>@page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.25in 1.0in = 1.25in; } P.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } LI.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } DIV.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman" } A:link { COLOR: blue; TEXT-DECORATION: underline } SPAN.MsoHyperlink { COLOR: blue; TEXT-DECORATION: underline } A:visited { COLOR: purple; TEXT-DECORATION: underline } SPAN.MsoHyperlinkFollowed { COLOR: purple; TEXT-DECORATION: underline } PRE { FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Courier New" } SPAN.EmailStyle17 { COLOR: windowtext; FONT-FAMILY: Arial } DIV.Section1 { page: Section1 } </STYLE> </HEAD> <BODY lang=3DEN-US vLink=3Dpurple link=3Dblue bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>The first one is because you are = behind a PIX=20 firewall with the fixup enabled for SMTP..This shouldn't be a problem = except=20 that any of you users that need to SMTP Authenticate won't be able to as = the PIX=20 in this configuration will not allow Extended SMTP commands which = include=20 Auth</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>The second is most likely caused by the = firewall as=20 well as you are probably in a Nat'd environment. If you want to comply = with this=20 portion of the RFC all you need to do is bind the external IP to the NIC = on the=20 mail server along with the internal ip's...Do not bind IMail to it = though. Keep=20 everything you have the same (if it's working that is)</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Eric S</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <BLOCKQUOTE dir=3Dltr=20 style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV> <DIV=20 style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B>=20 <A [EMAIL PROTECTED] = href=3D"mailto:[EMAIL PROTECTED]">Wolf=20 Tombe</A> </DIV> <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20 [EMAIL PROTECTED] = href=3D"mailto:[EMAIL PROTECTED]">[EMAIL PROTECTED] om</A>=20 </DIV> <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Sunday, August 08, 2004 = 8:25=20 AM</DIV> <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [IMail Forum] = DNSReports Mail=20 server warnings</DIV> <DIV><BR></DIV> <DIV class=3DSection1> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">I=92m running iMail 8.12 = with=20 multiple mail domains each configured to have its own IP number and = each with=20 its own DNS and MX records accordingly. I preparing to launch = these=20 domains soon and while doing DNS and Mail Server testing I find I=92m = getting=20 the following two =93warnings=94. Although neither of these = appears=20 critical, I=92d prefer to have no warnings if possible. With = this in mind,=20 I=92m wondering what iMail settings I should change to resolve these=20 issues.</SPAN></FONT></P> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">WARNING: One or more of = your mail=20 servers may be claiming to be a host other than what it really is (the = SMTP=20 greeting should be a 3-digit code, followed by a space or a dash, then = the=20 host name). This probably won't cause any harm, but may be a technical = violation of RFC821 4.3 (and RFC2821 = 4.3.1).</SPAN></FONT></P><PRE><FONT face=3DArial size=3D2><SPAN = style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">mail.proudandout.net = claims to be host = *******************************2*22************************.</SPAN></FONT= ></PRE> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">WARNING: One or more of = your mail=20 servers does not accept mail in the domain literal format = ([EMAIL PROTECTED]).=20 Mail servers are technically required RFC1123 5.2.17 to accept mail to = domain=20 literals for any of its IP addresses. Not accepting domain literals = can make=20 it more difficult to test your mail server, and can prevent you from = receiving=20 E-mail from people reporting problems with your mail server. However, = it is=20 unlikely that any problems will occur if the domain literals are not=20 accepted.</SPAN></FONT></P> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: = Arial"></SPAN></FONT> </P><PRE><FONT face=3DArial size=3D2><SPAN = style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">mail.proudandout.net's = [EMAIL PROTECTED] response:</SPAN></FONT></PRE><PRE><FONT = face=3DArial size=3D2><SPAN style=3D"FONT-SIZE: 10pt; FONT-FAMILY: = Arial"> >>> RCPT = TO:<[EMAIL PROTECTED]></SPAN></FONT></PRE><PRE><FONT = face=3DArial size=3D2><SPAN style=3D"FONT-SIZE: 10pt; FONT-FAMILY: = Arial"> <<< 550 not local host = [67.101.20.141], not a gateway</SPAN></FONT></PRE> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Any suggestions will be = greatly=20 appreciated.</SPAN></FONT></P> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: = Arial">Thanks!</SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML> ------=_NextPart_000_0032_01C47D27.45503F20-- To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
