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Tag Archives: SMTP

Theory About Bulk Emails

Common Question among Friends…
How many email I can send through my mail server?

Well, Everything depend on your server including “EMail Server”…. we can say all depend on our budget :)

The number of emails you can send depend on… “Server’s Bandwidth”, “Size of Messages”, “Expected number of failures”…..

Number of seconds to send all data = Total amount of data to send / Bandwidth per second

Some Hosting packages (# emails depend on server):
Budget Shared Hosting Plans – 100 emails per hour
Unlimited Hosting Plans – 100 emails per hour
Advanced Shared Hosting Plans – 250 emails per hour
Professional Shared Hosting Plans – 500 emails per hour
Resellers – All Reseller Servers have a 500 email per hour
Semi-Dedicated Servers – 5000 emails per hour
Cloud VDS – No Limit
Dedicated Servers – No Limit
Enterprise Cloud Servers – No Limit

Solution:

PowerMTA – This is a product from port25.com specifically a mail delivery backend that handles email delivery, inbound bounces & replies, reporting & load balancing.

Read Full Article here

 

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Open source – Port25

If you have trouble getting the PHP’s mail() function to work on your server.
If the function returned true, but never send the emails to target account.
Some ISP’s block port 25 (mail port), so you can’t send directly but you can send indirectly using your ISP’s mail server. 😉

Many email providers keep lists of IP addresses and block incoming mail, or move it immediately to a junk/spam folder.

There are some Open Source solutions to filter your mail problems..
You can check Open Source MTA here http://en.wikipedia.org/wiki/Comparison_of_mail_servers

Here list some MTAs as

  1. postfix
  2. qmail
  3. exim
  4. sendmail

Above MTA don’t handle integrated reporting, bounce management, and spam management, reporting.

PowerMTA: PowerMTA (this is not open source) provides the unique features and capabilities required by email service providers and enterprises to maximize the effectiveness of email marketing and customer communications, handle integrated reporting, bounce management, and spam management, reporting etc.

http://www.port25.com/products/prod_features.html

 

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Linux Mail Servers

Manual Settings
~~~~~~~~~~~~

Mail Server Username: no-reply+domain.com
Incoming Mail Server: mail.domain.com
Incoming Mail Server: (SSL) host200.hostmonster.com
Outgoing Mail Server: mail.domain.com (server requires authentication) port 26
Outgoing Mail Server: (SSL) host200.hostmonster.com (server requires authentication) port 465
Supported Incoming Mail Protocols: POP3, POP3S (SSL/TLS), IMAP, IMAPS (SSL/TLS)
Supported Outgoing Mail Protocols: SMTP, SMTPS (SSL/TLS)

Warning: Changing MX to something besides domain.com will prevent us from managing your mail. The email will no longer be sent to this server.

Increase RAM size
~~~~~~~~~~~~~~

Some time there is problem with kernel.. as rams physically is 8GB. The reason for 3GB RAM is kernel not updated, so the high volume memory is not recognized. Try this command to update ram size:

# yum install kernel-PAE

http://www.cyberciti.biz/tips/category/mail-server

 
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Posted by on January 30, 2010 in Amazon Cloud EC2 S3, CentOS, Fedora, Linux, Tips, Tricks

 

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