The server configuration of email, including POP3, SMTP, IMAP, and popular server software packages that control email.

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15 views

User Mailbox content replicated 100X

Exchange 2007SP2 I have a user mailbox currently has 5 million emails still reflecting on our Exchange Server. Long story short, users sent emails replicated 100x and overloaded our Server. I as ...
0
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1answer
11 views

postfix unable to receive external emails

I have setup an email server with postfix and dovecot. Installation went fine but I am not able to receive emails from external users(gmail, yahoo etc) but I can send email to external users. When an ...
2
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3answers
45 views

Will mailing lists “break” if SPF is too restrictive?

I have recently configured my own mail server (Linux-based postfix + dovecot scenario). This is just for personal use - I have no bulk mail going out, no automatically generated mail outbound from the ...
0
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0answers
11 views

how do i modify mail(envelope and header) as using mailfromd

I`m trying to modify mail(header,envelope) while using mailfromd. These are my questions: I found "Envelope Modification Functions" in library following as rcpt_add and rcpt_delete. Is there no ...
1
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0answers
26 views

Unified email strategy, migration from remote IMAP and Thunderbird

We are a small team of five people managing roughly 100 websites on a dozen servers. The current email strategy implemented by me some years ago seems not to be optimal any more. Let's describe the ...
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1answer
31 views

sending email from cron in html format not text

i am trying to send email every 1 hour from cron job which is executing a php script that fetches data from database and shows in a table format. i have CentOs 6.1 where i created my cron job.firstly ...
2
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0answers
15 views

Setting up Office 365 / Exchange 365 email in Mail (32-bit) without logging in as the user?

There's been a recent change in policy at the place where I work that I cannot login to a user account without the user being virtually or physically present. In order to setup their account at ...
1
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1answer
35 views

When cron is completed How to get email notification and log in a file (both)

I am a Newbie to linux. I'm trying to figure out things. Can someone kindly help me how to combine these two commands? (1) Normally cron can results can be directed to a log file by editing crontab ...
-3
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0answers
23 views

How to test connection to Google mail server? [on hold]

For example, google mx records for gmail is ALT1.ASPMX.L.GOOGLE.com I've tested all common smtp ports (25, 2525, 465, 587) and does not work. Any idea?
0
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0answers
14 views

Linking mail groups from /etc/aliases to Mailman for archive purpose

I have configured mail server with postfix as MTA and Dovecot as MDA. Ubuntu version is 12.04. Also created mail groups in /etc/aliases. Mailing is working perfect. For archiving purposes I have now ...
-2
votes
1answer
29 views

Email server domain name best practice [closed]

Is it a good idea to use a subdomain or an entirely different domain name for sending generated emails such as registration, password reset...? So that the main domain doesn't get marked for spam. ...
1
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1answer
59 views

Should DNS A timeout to result in permanent email failure?

Occasionally an email does not get through when sent to a recipient who uses the outlook.com system for their email server. Their MX record resolves fine, but their A record (something like ...
-1
votes
0answers
10 views

Amavisd custom final behaviour based on recipient

I know I can set default message handling in Amavisd by setting $final_*_destiny to one of D_PASS, D_BOUNCE, D_REJECT or D_DISCARD. And I know I can disable specific checks by recipient with the ...
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0answers
25 views

Send mail with postfix using multiple ip address [duplicate]

I'm developing a mail marketing service and in this service I need to set an outgoing IP address in postfix before send an email but the problem is, I have multiple clients and I need to set an ...
0
votes
1answer
30 views

Finding valid email service providers in a large list of domains

I have a list of approximately 13K free email/webmail providers from circa 2000. Obviously the vast majority of these services have gone out of business, and the domains have either lapsed, or been ...
9
votes
2answers
645 views

How can I reduce the damage of stolen mail accounts?

Currently I’m offering some webhosting to a few advertising agencies for their premium customers. But currently I have a great problem with the E-Mail Service. In the last week, the E-Mail Accounts of ...
1
vote
1answer
55 views

Posftix mails not arriving to external recipients (closed port)

I have an Ubuntu Server (192.168.1.2) behind a router (192.168.1.1 with static public IP a.b.c.d and domain example.com). Apache works fine and is accessible from the outside under example.com. On ...
0
votes
2answers
65 views

What should I set in postfix's myhostname / mydestination?

I am using Ubuntu, on a web server need to send out email (via sendgrid), this server never receive any external email, and I've the following hostname settings /etc/hostname = example /etc/hosts = ...
0
votes
1answer
22 views

Send email from main domain using exim4

I've installed exim4 on my server to send email for server messages, registration messages, lost password messages etc. My server's FQDN/rDNS is mail.example.com, which I also entered during the ...
2
votes
1answer
49 views

How can I enforce TLS in sendmail when I don't necessarily know the hostname of the downstream MTA (only IPs)? [e.g. by recipients' domain]

I'm running SendMail 8.14 and have some custom static routes for sending to certain domains. These domains are "internal" but not managed directly by me. Here's an example of ...
3
votes
1answer
21 views

Exim4 crypteq with MySQL lookup always fails

I got an Exim 4.80 server on Ubuntu 14.04. I want to switch from Dovecot Auth to MySQL. The passwords are stored as crypt (with sha256, beginning with $5$). The expansion looks like this: ...
0
votes
2answers
35 views

SPF with a Mail Gateway: do I need to put all my mail servers?

I always put all my Mail Servers in SPF declarations, but I'm not sure if this is the correct way to implement SPF. All my mail got routed through a Mail Gateway. Everything goes first to this server ...
0
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0answers
37 views

Email spam/hack and odd apache logs around the same time

A friend of mine started getting failed delivery notices yesterday (June 23rd, 2014) on all of his domain e-mails, and so he asked me to look into it. I have been looking through various logs and his ...
0
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0answers
13 views

PHP list Configuration With VPS

I have with VPS with 2GB Ram Here are some details.. total used free shared buffers cached Mem: 1922356 1801120 121236 0 127448 1034404 -/+ ...
2
votes
0answers
19 views

Single MailCleaner installation for two distinct domains with user authentication

I would like to use one MailCleaner installation to handle two distinct domains as one centralised spam management system, sharing configuration and mainly the bayesian filtering database. Both ...
2
votes
3answers
48 views

Same SMTP server, Microsoft Exchange reaches recipient but sendmail does not

I debated the question title for a while but I think this about explains the question. Feel free to edit it if someone has a better title. Environment: Microsoft Exchange 2010 and sendmail. Problem ...
6
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3answers
1k views

Should I let email bounce or send it to a blackhole?

I have a lot of unused (old, dead) accounts on my machine. Many of them receive literally thousands of emails a day, all spam. If the account was used by a person, I let the email bounce so that ...
0
votes
0answers
33 views

Duplicate emails being sent

I'm on a Mediatemple server with Plesk 11.0.9, CentOS 6.4. The same email was sent to user@wesleyan.edu 31 times and I'm trying to determine why. This has been a reoccurring problem with various ...
-2
votes
1answer
25 views

Copying over E-mail accounts & content from Zpanel to Zpanel

I'm switching hosting providers and I'm at the point that all the websites are already running (not that much effort..:) but now the only thing, as far as I can see, that is left are the E-mail ...
0
votes
2answers
20 views

Catch-all email with specific exceptions on a domain [closed]

I want to set up catch-all email on a domain, but also retain the ability to except certain email accounts, such that, if an email is sent to an excepted account, it is bounced back with an "account ...
-1
votes
1answer
56 views

Postfix + Mailq: Mailbox Full no bounce

I have a mail server and alot of clients. Some of my clients have many email accounts and dont use some of them. So, I have alot of mailboxes full, which receives dozens of emails every day. So, my ...
0
votes
1answer
29 views

Can I use the same domain to send outgoing only emails from another server?

The company currently uses gMail apps for incoming/outgoing emails. It has sending limits which I need to get around. Can I set up (say) postfix for outgoing only email on the local server? Can it ...
0
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1answer
31 views

I need to email the users of my site but my host does not support many emailings per hour

I have a security concern on my site and I need to inform my users about it via their stored email addresses. However, my host does not allow for huge numbers of emails. What are my options?
1
vote
1answer
35 views

Deliver email from local development server

I'm working on a website development and need to test some email stuff (send email to register users just me and I'm using my personal email address for this purpose). I'm not an expert so I only have ...
0
votes
1answer
42 views

Plesk 12 Linux Server Mail Spam Issue

I'm running multiple websites on my dedicated server, and for one website in particular where users signup and then must verify their email address, I'm getting reports from my client that a small ...
-2
votes
1answer
54 views

Email system architecture and implementation [closed]

It's been over a week already and I am unable to find satisfactory solutions to my problem on the Internet. I hope the experts here could lend a helping hand. I will just go straight on describing the ...
-1
votes
0answers
17 views

Google Apps Audit

I have recently setup a business level Google Apps account but a minority of our users are misusing their accounts so we would like to start monitoring incoming and outgoing mail. The simplest ...
0
votes
1answer
40 views

Email appears to be sent, but never arrived (probably because of attachment size). Shouldn’t there be an error message? [closed]

A friend tried to send me an email containing a big attachment (> 30 MB). According to his email client, the email was sent successfully (it moved from Outbox to Sent folder). I never received this ...
0
votes
0answers
42 views

Postfix, schedule batches of email to be sent

Is it possible to have postfix limit the amount of emails it sends at once and when there is larger than x email, send them out in timed batches (wait 5 minutes, send another 50, something like that)? ...
2
votes
2answers
75 views

Exchange server not writing a “To: ” header for BCC'd messages

Is there a way to make an Exchange server set the To: header in the message sent to a bcc recipient? We have admin access to the server. Other email programs do this, so it should be possible. ...
-1
votes
0answers
54 views

Trying to make Mailman work with Zoho mail

I installed mailman on my CentOS 6 server, (followed instructions here) I created a test list and checked the Send "list created" email to list owner? option, but email didn't reach my mail box (I'm ...
0
votes
0answers
18 views

Add a per-domain filter in sieve

How can I set up a per-domain filter in sieve/dovecot? In documentation I can see per-user setting: sieve = ~/.dovecot.sieve, and right now I'm using global filter: sieve_before = ...
0
votes
1answer
24 views

Postfix Regex Alias with Text Substitution

I'm migrating from an older email structure ([first letter of first name].[last name]@company.com) to [first letter of first name][last name]@company.com. To ensure that mail sent to older addresses ...
1
vote
1answer
65 views

DMARC 'sampled out' policy override effect in GMail server

Anyone know what actually a 'sampled out' override reason mean in DMARC aggregated daily reports? I only get those from GMail and recently I've got some complains of undelivered messages from ...
-1
votes
0answers
14 views

Move and import e-mails inside new e-mail account in cPanel

How can we move mails between 2 different mail accounts on a whm/cpanel server? Company was renamed and all mails from contact@oldname.com should be moved in info@newname.com I tried copying the ...
0
votes
0answers
19 views

Configuring SMTPS in Virtualmin

I'm attempting to configure SMTPS in Virtualmin and am running into a roadblock. I followed the instructions here without a problem but when I do the autoconfigure in Thunderbird it still says that ...
2
votes
5answers
313 views

Is it okay to automatically answer emails in a funny way?

As an example: If the mail comes from an address noreply@xyz.com, then the systems responds with "why would we want to read your mail if you don't let us reply". Is this accepted behavior in the net ...
-1
votes
1answer
22 views

Sending mail via PHP gives fatal error in postfix

Any idea why sending mail via PHPs mail() function gives the following error in postfix: fatal: no login name found for user ID 6000. 6000 in this case is the user I have configured in the PHP-FPM ...
1
vote
1answer
47 views

Have Postfix bounce certain addresses with a custom message and forward all other messages to another server

We have a list of users who no longer have mailboxes in our Exchange environment. We want to have a very specific reply to these users with a possible custom variable. I thought Postfix would ...
0
votes
2answers
55 views

Postfix mail server acting as an open relay

I'm trying to get postfix to work with mail clients (thunderbird / outlook), but the only way I can achieve it at the moment is by turning the mail server into an open relay, which is very bad, ...