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• Spam mail through SMTP and user spoofing

  - by Josten Moore

  I have noticed that it's possible to telnet into a mailserver that I own and send spoofed messages to other clients. This only works for the domain that the mail server is regarding; I cannot do it for other domains. For example; lets say that I own example.com. If I telnet example.com 25 I can successfully send a message to another user without authentication: HELO local MAIL FROM: [email protected] RCPT TO: [email protected] DATA SUBJECT: Whatever this is spam Spam spam spam . I consider this a big problem; how do I secure this?

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• Why did I loose access to the mailboxes on my old web/mail host after changing to a new one but keeping old MX values

  - by LaserBeak

  So I changed the NS records with registrar to point at the new webhosts DNS servers and edited the SOA record there, deleting the new hosts default MX records and instead putting in the old ones for the old web\mail hosts. The website A record is however pointing at the new webhosts servers and the site comes up fine. But none of this should cause me to loose access to mailboxes on my old hosts mail server right? I log into the control panel on the old host, all the mailboxes are there, all the passwords are fine but I can't log in using either webmail or pop3, says incorrect log-in/password. I even created a new mailbox and password for it respectively, but it would not let me log in. For what its worth I did not change\delete the records for 'A' on the old webhost zone file, since I am not hosting the site with them anymore and NS records are pointing to other hosts DNS servers/zone file so that shouldn't matter right? The old hosts mailserver is also not simply down, I can tell because through the control panel I setup a mail forward for one of the existing inboxes and when sending mail to it, it receives it and forwards it fine. So from this I can deduce that I have correctly inputted the old hosts MX records into the zone file hosted on the new hosts DNS and the mail is being sent to the old hosts mail server(s) and is successfully forwarded by it. But why can't I log into those account/inboxes anymore ?

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• How do I stop Outlook from asking me to choose a profile?

  - by wahle509

  Microsoft Outlook 2003: I used to have two profiles with my Outlook, but I deleted it and now only have one. It is still asking me for what profile to choose. I have tried selecting the option to set it as my default multiple times, yet it still asks me. How can I stop it from asking me?

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• Outlook 2003 won't send mail

  - by Ho Li Cow

  A colleague's e-mail has just started playing up - he's using Outlook/Office 2003 on a Win XP SP3 machine. Yesterday his mail has suddenly stopped being received, although there are no errors of any kind that i can see. It was only noticed because he didn't have any replys all day. His e-mails seem to send fine - no errors come up, the mail goes into Sent Items as usual, but it never arrives at it's destination. However, when mail is sent from Outlook Web Access, e-mails send fine. All connections to the server appear fine and outlook is 'connected' but I've had a look at the message tracking on our Exchange 2003 server and no messages are appearing when sent from outlook, only when sent through OWA. Where should i be looking ? Thanks.

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• Outlook 2003 won't send mail

  - by RKid

  A colleague's e-mail has just started playing up - he's using Outlook/Office 2003 on a Win XP SP3 machine. Yesterday his mail has suddenly stopped being received, although there are no errors of any kind that i can see. It was only noticed because he didn't have any replys all day. His e-mails seem to send fine - no errors come up, the mail goes into Sent Items as usual, but it never arrives at it's destination. However, when mail is sent from Outlook Web Access, e-mails send fine. All connections to the server appear fine and outlook is 'connected' but I've had a look at the message tracking on our Exchange 2003 server and no messages are appearing when sent from outlook, only when sent through OWA. Where should i be looking ? Thanks.

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• merge two distribution list in outlook

  - by Kelbizzle

  I have two distribution list in outlook contacts. I would like to make it one. Is this at all possible?

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• Windows 2003 - Isolate mailserver on webserver with VMware Server

  - by user43279

  Hi, I've a Virtual Private Server with Windows 2003 and root access. This server mainly acts as a web hosting machine (IIS, Apache). Additionally it is used as a mail server. Is it possible to isolate a mailserver (for example HMailServer) by using VMware Server on Windows 2003 in order to avoid potential viruses moving from the guest into the host system? Is this is a good direction to protect the web server from viruses? Kind regards, Jakub

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• trigger script on postfix delivery errors

  - by edovino

  I'm trying to get postfix to run a script on soft (4xx) and hard (5xx) delivery errors, but I'm not sure where to start. If I understand things correctly, I could insert (pipe-based) filters in the master.cf file, there's a whole 'milter' infrastructure available, an finally I suppose I could simply grep through the mail.info logs. So - any advice? Should I go the 'handle it via master.cf' route, and if so, what daemon should I intercept? 'bounce'? The grep-the-logs route is probably simplest, but I can't help but feel that there is a better way. Any advice appreciated!

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• Transport rule - Exchange 2010

  - by Jeff

  I have two transport rules on my exchange server. One is: > Apply rule to messages: From users that are 'outside the organization' > and when any of the recipients in the To or Cc fields is a member of > '[email protected]' Forward the messageto sender's manager > for moderation The second is: Apply rule to messages from a member of '[email protected]' and sent to users that are 'outside the organization' forward the message to the sender's manager for moderation. nointernetmail is a distribution group, and each user has the managed by set to there local manager. However these transport rules do not work, internet mail is still sent and received without issue. I have read various tutorials / articles of how to do this on sites such as msexchangeblog and even microsoft technet, however even after following the guides I am still unable to have this function properly. Any help is appreciated.

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• Thunderbird replacement with PGP support

  - by Robert

  Is there any good Thunderbird replacement with full PGP support ? To be more exact replacement for (Thb +Enigmail this is the tandem Im using now) Best way would be if PGP would be built in into application. Commercial software is also fine :) excluding M$ software. What I need: - PGP support - application much more stable than Thunderbird, - support for Gmail out of the box including support for labels, - better search functionality (search in THB is far away from perfection), - cross platform (I should be able to run it on windows and Linux). So do you guys have an experience with other mail clients which have PGP support ?

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• Google Apps: MX records for zonefile

  - by 23tux

  Hi everybody, I have a question about using Google Apps for handling emails. I don't want to set up a whole entire mail system on my server, so I decided to use Google Apps. The ownership of my domain is approved, and now I'm trying to change the MX records in the zone file of my domain. But I think I'm doing wrong, it doesn't work. I want to use mail.mydomain.com as a adress to the mail server for POP, SMTP and IMAP. My zone file looks like this: $TTL 86400 @ IN SOA ns1.first-ns.de. postmaster.robot.first-ns.de. ( 2011011700 ; serial 14400 ; refresh 1800 ; retry 604800 ; expire 86400 ) ; minimum @ IN NS robotns3.second-ns.com. @ IN NS robotns2.second-ns.de. @ IN NS ns1.first-ns.de. @ IN A 111.111.111.111 localhost IN A 127.0.0.1 www IN A 111.111.111.111 ftp IN CNAME www loopback IN CNAME localhost mail IN CNAME @ relay IN CNAME www @ IN MX 10 ALT1.ASPMX.L.GOOGLE.COM. @ IN MX 10 ASPMX3.GOOGLEMAIL.COM. @ IN MX 10 ASPMX2.GOOGLEMAIL.COM. @ IN MX 10 ASPMX.L.GOOGLE.COM. @ IN MX 10 ALT2.ASPMX.L.GOOGLE.COM. I hope someone can figure out, what's wrong with this configuration. When I start a ping on mail.mydomain.org I get an answer from 111.111.111.111 and not from the google server ALT1.ASPMX.L.GOOGLE.COM. thx, tux

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• What's better in terms of user experience - providing an email address or a link to my projects github account?

  - by Oliver Weiler

  What's better in terms of user experience? Provide the user an email account where he can report bugs, or a link to the projects github issues page (which requires a github account but may be easier to submit bugs to)? EDIT The application is a Bash script hosted on github. The GNU Coding Standards suggests using an email address, which may or may not an appropriate solution. Target audience is the CLI power user.

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• Fonts and encoding in windows live mail.

  - by Looser

  Sometimes I have non-english emails (arabic for example). When I try to open them with windows live mail, it doesn't show them correctly.. for example such this: &1588;&1603;&1585;&1575; &1610;&1575;&1605;&1575;&1606; (I changed it a bit to show here as I want) I had a look at options, there was encoding on arabic(windows) but I didn't find anything else. When I open this mail on yahoo however, there is no problem. What can I do?

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• How to export User cert with private key in PKCS12 format

  - by andreas-h

  I'm running Win2008R2, and have installed an Enterprise CA. I can create user certs, but no matter what I do, I cannot export the private key. I'm using the un-touched User certificate template, and the "allow export of private key" option is selected. Still, whenever I go to the "export" dialogue of the certificate (both as user and as administrator), I don't get asked if I want to export the private key, and the option to select PKCS12 format is grayed out. Any help is greatly appreciated!

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• How can I make an alias expand to a list of recipients returned by a command?

  - by Frerich Raabe

  I have an rarely used /etc/aliases entry vmailusers: :include:/usr/local/etc/vmailusers The /usr/local/etc/vmailusers file is generated by a cronjob executing ls /home/vmail | grep -v lists > /usr/locale/etc/vmailusers chmod 0640 /usr/local/etc/vmailusers chmod mailnull:mail /usr/local/etc/vmailusers Is there a way to avoid having to run a cron job but rather execute the ls command in the very moment the vmailusers alias is used?

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• Postfix configuration w.r.t. port 25

  - by Monkey Boson

  After a considerable amount of research, I have configured my postfix server to use dovecot to accept SMTPS connections over port 465 and everything works swimmingly. Unfortunately, I forgot that, unless I listen to port 25, I'm not going to receive any e-mail from the net. I'm hoping somebody knows off the top of their head how to open up port 25 on Postfix for anonymous users, but disallow relaying and any other bad things on that port. And to leave the port 465 the way it is. As to my current configuration, I changed the master.cf file: smtps inet n - n - - smtpd and the main.cf file: # Use our SSL certificates smtpd_tls_cert_file = .....cer smtpd_tls_key_file = .....key smtpd_tls_security_level = may # Use Dovecot for SASL authentication smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth broken_sasl_auth_clients = yes smtpd_recipient_restrictions = permit_sasl_authenticated, reject_unauth_destination Any help is appreciated!

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• Exchange 2003 mailbox migrated to 2010 not showing up in Address book

  - by TJ

  I have migrated about 45 mailboxes at this point from our single instance of Exchange 2003 to a High Availability Exchange 2010 environment successfully. However one mailbox moved successfully and the user is able to send and receive e-mail internally and externally with no problems but they do not show up in the Global Address List. The OAB is owned by an Exchange 2010 mailbox server. What am I missing?

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• Outlook 2003: How to display my own messages in conversation view?

  - by Godsmith

  When I select View-Arrange By-Conversation in Outlook 2003, the messages I sent myself are not shown in the message threads (unlike the conversation view in say, Gmail). To show my own messages I have to go to the Sent Items folder, if not someone has replied to one of my messages and included my original text. Is there a way to make my own messages visible in the conversation threads? Thank you! /Filip

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• Can Exchange be configured to populate a text/plain part of a meeting invite?

  - by larsks

  I work in an environment where some people are using Microsoft Exchange and some people are not. The meeting invitations sent out by Exchange include a text/calendar attachment with the meeting information in iCal format. They also include an empty text/plain and an empty text/html part. Is there any way to configure Exchange such that it will populate either (or both!) the text/plain or the text/html part with a human-readable version of the meeting summary? This would help out people using mail clients that do not have native support for text/calendar attachments.

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• mail system having automated timed e-mail service or Differed delivery option?

  - by infant programmer

  There is hardly some need for this feature I guess, but I need a system which delivers the mail at specified delay-time [1 hour, 2 hours later or specified time]. Kindly let me know if you are aware of such feature.

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• SPF for two different outgoing servers?

  - by Marcus

  I have ran into a problem that I think someone should have a really clever answer for. Today we have our own mailserver that looks like "mail.domain.com" – which we use to send out mail to our customers (with a modified PHPMailer script). Usually around 5000 mails every day. Everything from customer support to invoices goes through there. The from-header is set to "[email protected]". We are now thinking of migrating to Google Apps for internal use (with 70+ users). However, we cannot use Gmails SMTP for sending "bulk" mails (they have a limit of 500 outgoing mails per day) so we really want to keep using our current system for sending automated mail to our customers – and using gmails SMTP for our internal use. So, how do we set up our SPF-records (Sender Policy Framework) for this? We do not want to get stuck in any filters for "spoofing" the sender from either type of account (the ones sent from our own server, and through Gmails). In short: we want to be able to use the same e-mail adress (for sending) on two different SMTP servers (and therefore two different IP-adresses). Anyone with a good knowledge off SPF who knows how to go about? Or if it is even possible? Anything else I should think of when switching to Google Apps?

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• In 2011, what are the reasons to stick with plain text mails?

  - by Aaron Digulla

  People entering college today have never known a world without an Internet. HTML was invented 1980, that's more than thirty years ago or 1.5 generations. But plain text mails are still common despite all their problems: Encoding issues Wrapped code segments No links No way to use the "a picture says more than a thousand words" lore Most of the security risks are now handled by the underlying browser engine and smart settings like: Don't allow JavaScript in mails Don't execute attachments Don't download external resources (like web bugs) On top of that, only very few people still read mail only in command line tools like Mutt. Knowing Mutt myself, I'm pretty sure you can configure it to display HTML mail with, say, w3m. On top of that, most HTML mail capable clients send two versions of the mail (pure text with an HTML attachment). I'm not sure if there are any people left on the planet which still use a 56kbit modem to access their mail accounts. So what reasons are left to stick with plain text mails in 2011?

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• Offlineimap -- push changes to all folders; only pull from INBOX folder

  - by g33kz0r

  I would like to be able to set up offlineimap to do the following Sync Remote/INBOX - Local Sync Local/Maildirs/* - Remote Possible? The use case here is: I download all new mail from my remote IMAP INBOX folder with offlineimap. offlineimap's posthook command calls a custom python script which does junk filtering, then sorts and categorizes my mail in the local INBOX folder to various local maildirs based on sender, etc. I read my mail with mutt and perhaps do some more categorization. ? Step 4 is what I'm after. I want offlineimap to push my local changes (categorization, filtering, deletion in the case of spam) back to the various folders on the imap server, but as you can see, there's no need for me to be pulling any changes from folders other than Remote/INBOX, as no changes happen on the IMAP server itself. I hope that's a clear explanation of the problem.

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• Looking for a web interaction layer for SmartList

  - by spot

  We run quite a few internal mailing lists with SmartList (procmail). I need to offer a web interaction ability (think Google Groups) to the mailing lists. Is there anything that will do this on top of SmartList? If not, is there anything that will do this in general on another linux mailing list manager?

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• How to back up OWA exchange emails without Outlook

  - by fpghost

  My university uses Microsoft Outlook Web Access (OWA) e-mail. Soon they will close my e-mail account as my course has ended, but I really do not want to lose the archive of emails and attachments. I've read a backup to something called a .pst can be made if one has access to Microsoft Outlook but I do not. Is there any other way I could back these up? (preferably on Ubuntu 12.04 but I also have access to Win 7 if need be). One idea I played with is using davmail to allow access via Thunderbird and performing some kind of backup with that. However, I cannot seem to get past Authentication failed: invalid user or password, retry with domain\user.

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