Preserving Sender Reputation - Port25 Solutions, Inc.

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What other commercialMTAs think is best, may not work in every regionof the world or with every type of sender. With PowerMTA, you cangranularly tune your settings to the local environment, and that is often whatdeliverability administrators require, depending on region and customer type(B2C, B2B).Additionally, “Adaptive” lacks the ability to calibrate rate-limiting gradually,according to feedback from the field, which in this case means deliverabilityconsultants that have worked with both PowerMTA and the MessageSystems product of Momentum. “We’ve seen IP warm-up rules in othercommercial MTAs’ systems, which are very “binary” and unrelated toISP feedback from local data.”PowerMTA offers more than just “backoff”. It can also disable IPs in aload-balanced pool of IPs, and it can bounce individual mails based onspecific temporary errors, such as “quota exceeded” errors reported asa temporary (4xx) error. We believe the main advantage of PowerMTA is“simplicity” and “control”. It is not overly complex and you’ll find that havingmore independence allows delivery administrators to be in full control. Fromthe field, we’re noticing that more and more delivery engineers are findingthemselves less obsessed with ISP policies. Certainly configuration is adiscernable part, but the right configuration is often a lot simpler than mostmight think. In the end it’s all about the quality content, because PowerMTA,like every MTA, is a “GIGO” system.Preserving your IPReputation with Auto-BackOff ModeWhen the automatic back off feature is triggered, your email sends will bemore successful. In this case, success means landing in the inbox, whichultimately preserves each individual mail stream along with your senderreputation. One of the keys to maximizing email deliverability to valid domainsis to know immediately when specific delivery issues are occurring withinyour queues. Having real-time visibility into queue performance is essential.The sooner a delivery expert realizes that there are definite problems, ormore specifically, that a remote site or ISP is rejecting your messages for onereason or another, the sooner one can attempt to get the problems resolved.This document contains confidential and proprietaryinformation belonging to Port25 Solutions, Inc. Theinformation in this document may not be disclosed toothers, copied or reproduced in any way without the priorpermission from Port25 Solutions, Inc. Copyright © 2013All rights reserved.3
There are many different kinds of error messages that remote sites willrespond with when simultaneous connections are made. These responsesallow you to directly see your current sender reputation, in the eyes of thatrecipient domain or mail gateway. Through this intelligent and automatedprocess, mail-streams will be reshaped, throttled, resulting in higherdeliverability rates.PowerMTA includes automated sender reputation monitoring, via anadvanced, real time SMTP command monitoring implementation. It notonly gives you an early warning alert system for specific types of errormessages, but it can be configured to resolve some problems as well, viasupport for automated configuration changes for future delivery attempts.Grouping by VirtualMTAFor greatest flexibility and granular sending control, PowerMTA groupsmessages for a particular domain within a particular VirtualMTA in its veryown queue. Sender reputation monitoring categorizes defined SMTPresponses (bounces) from remote hosts for each queue, with the ability todefine certain actions (e.g., send an e-mail alert while throttling deliveries)upon a match. You can create highly customizable actions at differentthresholds for different VirtualMTAs. The Automatic Back off mode allowsyou to regulate domain specific rules, limits substituting requirements,and deferral responses in real time. Each message can be shaped withindividual set of rules tuned specifically for its sending environment. Youcan extend these capabilities with your own customized set of rules.Queue Modality: Backoffand NormalQueue Modality is accomplished through the introduction of queue“modes”. The two modes initially supported are “normal” and “backoff”.You can also configure PowerMTA so that, when a queue enters backoffmode, it can trigger several types of rules, many of which are granularlycustomizable. As an email administrator, you should be familiar with all ISPrate-limiting policies in order to configure “back-off” mode optimally.This document contains confidential and proprietaryinformation belonging to Port25 Solutions, Inc. Theinformation in this document may not be disclosed toothers, copied or reproduced in any way without the priorpermission from Port25 Solutions, Inc. Copyright © 2013All rights reserved.4
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Preserving Sender Reputation - Port25 Solutions, Inc.

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