The first version was called Exchange Server 4.0, to position it as the successor to the related Microsoft Mail 3.5. Exchange initially used the X.400 directory service but switched to Active Directory later. Until version 5.0 it came bundled with an email client called Microsoft Exchange Client. This was discontinued in favor of Microsoft Outlook.

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After recognizing what the issue was, I tried to contact customer service for Coinbase, which stays true to its reputation, is completely non-existent. They told me that the funds were completely lost because of the mere fact I have sent BCH to a BTC wallet. However, I had been doing research and found that if the same issue occurred (sending BCH to BTC wallet) on the Bitcoin.com Wallet application, there is a very easy process to follow: simply click on the settings for the wallet, and "scan for funds"

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In November 2007, Microsoft released SP1 for Exchange Server 2007. This service pack includes an additional high-availability feature called SCR (Standby Continuous Replication). Unlike CCR, which requires that both servers belong to a Windows cluster typically residing in the same datacenter, SCR can replicate data to a non-clustered server, located in a separate datacenter.

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Support for Exchange ActiveSync (EAS) was added to Microsoft Exchange Server 2003. It allows a compliant device such as a Windows Mobile device or smartphone to securely synchronize mail, contacts and other data directly with an Exchange server and has become a popular mobile access standard for businesses due to support from companies like Nokia and Apple Inc.[14] as well as its device security and compliance features.

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Rising fees on the Bitcoin network contributed to a push by some in the community to create a hard fork to increase the blocksize.[11] This push came to a head in July 2017 when some members of the bitcoin community including Roger Ver felt that adopting BIP 91 without increasing the block-size limit favored people who wanted to treat bitcoin as a digital investment rather than as a transactional currency.[12][13] This push by some to increase the block size met a resistance. Since its inception up to July 2017, Bitcoin users had maintained a common set of rules for the cryptocurrency.[12] Eventually, a group of bitcoin activists,[14] investors, entrepreneurs, developers[12] and largely China-based miners were unhappy with Bitcoin's proposed SegWit improvement plans meant to increase capacity and pushed forward alternative plans for a split which created Bitcoin Cash.[15] The proposed split included a plan to increase the number of transactions its ledger can process by increasing the block size limit to eight megabytes.[12][13]
The current version, Exchange Server 2019,[2] was released in October 2018. Unlike other Office Server 2019 products such as SharePoint and Skype for Business, Exchange Server 2019 can only be deployed on Windows Server 2019. One of the key features of the new release is that Exchange Server can be deployed onto Windows Server Core for the first time, additionally Microsoft has retired the Unified Messaging feature of Exchange, meaning that Skype for Business on-premises customers will have to use alternative solutions for voicemail, such as Azure cloud voicemail. Unified Messaging continues to exist in Exchange Online requiring an Exchange Plan 2 license.

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There are two factions of bitcoin supporters, that support large blocks or small blocks.[20] The Bitcoin Cash faction favors the use of its currency as a medium of exchange for commerce while the Bitcoin-supporting faction view bitcoin's primary use as that of a store of value.[20] Some Bitcoin supporters like to call Bitcoin Cash “Bcash,” “Btrash,” or simply a scam, while Bitcoin Cash advocates insist that their implementation is the pure form of Bitcoin.[20]

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Both Bitcoin as well as Bitcoin Cash use a proof-of-work algorithm to timestamp every new block. The proof of work algorithm used is the same in both cases. It can be described as a partial inversion of a hash function. Additionally, both Bitcoin and Bitcoin Cash target a new block to be generated every ten minutes on average. The time needed to calculate a new block is influenced by a parameter called the mining difficulty. If the total amount of mining power increases, an increase of the mining difficulty can keep the block time roughly constant. Vice versa, if the mining power decreases, a decrease of the mining difficulty can keep the block time roughly constant.[36]

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Exchange Web Services (EWS), an alternative to the MAPI protocol, is a documented SOAP-based protocol introduced with Exchange Server 2007. Exchange Web Services is used by the latest version of Microsoft Entourage for Mac and Microsoft Outlook for Mac - since the release of Mac OS X Snow Leopard Mac computers running OS X include some support for this technology via Apple's Mail application.

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Defensive back Minkah Fitzpatrick’s desire to get out of Miami has been fulfilled: The Dolphins are trading the former Alabama All-American to the Pittsburgh Steelers in exchange for a first-round selection in the 2020 NFL Draft. — Mark Inabinett | Minabinett@al.com, al, "Miami Dolphins trade Minkah Fitzpatrick," 17 Sep. 2019 The two sides had been seeking to reach an accord on the withdrawal of thousands of American troops from Afghanistan in exchange for security guarantees from the insurgents. — NBC News, "Blast kills 24 at Afghan election rally, aide says president unhurt," 17 Sep. 2019 Federal prosecutors have not said whether Solis has been given immunity in exchange for his testimony. — Chicago Tribune Staff, chicagotribune.com, "The Spin: Lightfoot and Preckwinkle to meet soon | Flavored e-cigarettes targeted | Political consultant who worked with Solis fined $25K," 16 Sep. 2019 Bullpen coach Jeremy Hefner was able to retrieve the ball for him in exchange for three other baseballs. — Betsy Helfand, Twin Cities, "Young Twins reliever Brusdar Graterol sets franchise record: 101.9 mph," 15 Sep. 2019 Bottle deposit centers, where Californians could redeem a soda bottle in exchange for five cents, are closing throughout the state. — Zoë Schlanger, Quartz, "California could become the first state to ban single-use plastics," 12 Sep. 2019 MonsterCloud waived its fee in exchange for a video testimonial featuring the Kaufman police chief, the president of TSM and the TSM technician who worked with Kaufman. — Renee Dudley, ProPublica, "The New Target That Enables Ransomware Hackers to Paralyze Dozens of Towns and Businesses at Once," 12 Sep. 2019 The district has been on alert following a June ransomware attack, during which hackers locked the district’s systems and demanded a ransom in exchange for restoring access. — Slade Rand, courant.com, "Wolcott Public Schools go offline once again following a possible second ransomware attack," 11 Sep. 2019 Yep, the singer known for bunny ears and stiletto pumps has traded her wardrobe staples in exchange for VSCO's favorite accessories. — Kelsey Stiegman, Seventeen, "Ariana Grande Wore the Ultimate VSCO Girl Outfit: Crocs and An Oversized Hoodie," 10 Sep. 2019

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EDA adjustments caused instabilities in mining difficulty of the Bitcoin Cash system, resulting in Bitcoin Cash being thousands of blocks ahead of Bitcoin. To address the problem with stability, a change of the Bitcoin Cash DAA was implemented and the EDA cancelled. The change took effect on 13 November 2017. After the change, the Bitcoin Cash DAA adjusts the mining difficulty after each block. To calculate the difficulty for a new block, the Bitcoin Cash DAA uses a moving window of last 144 blocks.[36] 

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Exchange's clustering (active-active or active-passive mode) has been criticized because of its requirement for servers in the cluster nodes to share the same data. The clustering in Exchange Server provides redundancy for Exchange Server as an application, but not for Exchange data.[4] In this scenario, the data can be regarded as a single point of failure, despite Microsoft's description of this set-up as a "Shared Nothing" model.[5] This void has however been filled by ISVs and storage manufacturers, through "site resilience" solutions, such as geo-clustering and asynchronous data replication.[6] Exchange Server 2007 introduces new cluster terminology and configurations that address the shortcomings of the previous "shared data model".[7]

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Bitcoincash is a peer-to-peer cryptocurrency in many regards similar to Bitcoin. Coins are created and transfered using an open source cryptographic protocol and are not managed by any central authority. Thanks to the adoption of Segregated Witness, and the Lightning Network, bitcoincash has some technical advantages over Bitcoin and other major cryptocurrencies. It is capable of handling a greater number of transactions in a given time and thus reducing potential bottlenecks, as seen with Bitcoin. Also, payment cost of bitcoincash is nearly zero and it’s payment speed is approximately four times greater than that of Bitcoin.

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